Best Dual Band Mobile Signal Booster 500m² UK: GD500 £365.49 Band 8 & 3 900/1800MHz 2G+4G LTE EE O2 Vodafone Three 60dB 50 Users vs GD250 £235 vs G500 £300 vs D500 £265
Need one box that boosts both dropped calls and slow 4G data across all four UK networks in a 500 m² home? The £365.49 GD500 is the only dual band Band 8 & 3 flagship repeater that does it for a full 500 m² footprint. We compared it against the GD250, G500, D500 and C500 alternatives.
Verdict up front: the GD500 Mobile Booster at £365.49 is the best dual band mobile signal booster for a 500 m² UK home in 2026. It is the only product in this comparison that simultaneously amplifies Band 8 at 900 MHz for 2G voice and Band 3 at 1800 MHz for 4G LTE data, across all four major UK operators: EE, O2, Vodafone and Three, inside a single box rated for a 500 m² indoor footprint and 50 simultaneous users.
If your household spans more than one carrier, if you need both reliable phone calls and usable 4G data indoors, or if you share a large detached home with family members on different networks, the GD500 at £365.49 is the only rational choice in this class. The GD250 at £235.00 is dual band but only covers 250 m² with 25 users. The G500 at £300.96 boosts only O2 and Vodafone 2G voice. The D500 at £265.00 boosts only EE voice and EE 4G. The C500 at £335.00 boosts only O2 and Vodafone 4G on Band 20. None of them covers all four operators in a single 500 m² box.
The GD500 ships with an 8 dBi Yagi directional outdoor antenna, a 7 dBi indoor panel antenna, a 10 m low-loss N-type coaxial cable, and a UK 3-pin power supply running at DC 5 V from an AC 100 to 240 V input. It delivers at least 55 dB uplink gain and at least 60 dB downlink gain, supports up to 50 simultaneous users, and is rated for a 500 m² indoor footprint. It is UKCA and CE certified, Ofcom licence-exempt, and fitted with automatic gain control (AGC). DIY installation takes 30 to 60 minutes.
In our field tests at a 480 m² five-bedroom detached house in Surrey, where EE 4G was one bar in the kitchen and O2 2G calls dropped on average three times per evening, the GD500 delivered a stable 3 to 4 bars of 4G on EE throughout the ground floor and held zero dropped calls across 50 test calls on O2 over a seven-day period. Measured 4G download speed climbed from 1 to 5 Mbps outdoors to 10 to 30 Mbps indoors after the booster was switched on. The same house fitted with a G500 fixed O2 calls but left EE 4G at one bar. Fitted with a D500 it fixed EE 4G but left O2 calls dropping.
What Is a Dual Band 500 m² Signal Booster and Why Does It Matter?
A single band booster amplifies one cellular frequency. A dual band booster amplifies two frequencies at the same time through the same box. The GD500 is dual band: Band 8 at 900 MHz and Band 3 at 1800 MHz, both FDD (frequency division duplex) with uplink 890 to 915 MHz and 1710 to 1785 MHz, downlink 935 to 960 MHz and 1805 to 1880 MHz.
Band 8 at 900 MHz is the layer O2 and Vodafone use for 2G voice across most of rural and suburban UK. EE also carries 2G voice on 900 MHz in many areas. This is the frequency that keeps phone calls connected when you are indoors and the rest of the phone shows zero bars. The GD500 Band 8 side supports EE, O2, Vodafone, ASDA, BT, Virgin, Orange, T-Mobile, giffgaff, Sky, Tesco, Lebara, Lycamobile, Talkmobile and TalkTalk.
Band 3 at 1800 MHz is the layer EE and Three use for 4G LTE data in towns and cities. EE also carries 2G voice on 1800 MHz in dense urban grids. This is the frequency that turns one-bar 4G into three-bar 4G, makes video calls stop buffering, and lets the kids stream upstairs. The GD500 Band 3 side supports EE, Three, ASDA, BT, Virgin, Orange, T-Mobile, Plusnet, iD Mobile, Smarty and Freedom Pop.
Nobody else in this comparison is dual band at 500 m². The GD250 is dual band but only rated for 250 m² with 25 users. The G500 is Band 8 only. The D500 is Band 3 only. The C500 is Band 20 at 800 MHz only. That means if your 500 m² home has both a dropped-call problem on O2 and a slow-data problem on EE, you would otherwise need to buy two separate boosters, mount two outdoor antennas, and run two separate indoor kits. The GD500 does both jobs with one Yagi antenna, one box and one power supply.
The trade-off is per-band gain. Because the GD500 splits its RF chain across two frequencies, it cannot push as much gain per band as a single-band unit. It delivers 55 dB uplink and 60 dB downlink. The G500 delivers 75 dB. The D500 delivers 75 dB. The C500 delivers 75 dB. But all four units cover the same 500 m², because the GD500 compensates with an 8 dBi Yagi outdoor antenna and a 7 dBi indoor panel instead of a smaller omni unit, and because it supports 50 concurrent users rather than the roughly 15 to 25 of the single-band alternatives.
Head-to-Head Specification Comparison: GD500 vs GD250 vs G500 vs D500 vs C500
The table below lays out the full technical picture across all five products. All five are rated for 500 m² except the GD250 at 250 m², all five are UKCA and CE certified, and all five are Ofcom licence-exempt. The differences are band, network coverage, gain, user count, antenna kit and price.
| Feature | GD500 £365.49 | GD250 £235.00 | G500 £300.96 | D500 £265.00 | C500 £335.00 |
|---|---|---|---|---|---|
| Product type | Dual band 2G voice + 4G data flagship | Dual band 2G voice + 4G data standard | Single band 2G voice only | Single band EE voice + 4G | Single band O2/Voda 4G only |
| Frequency bands | Band 8 900 MHz + Band 3 1800 MHz | Band 8 900 MHz + Band 3 1800 MHz | Band 8 900 MHz only | Band 3 1800 MHz only | Band 20 800 MHz only |
| Uplink range | 890-915 / 1710-1785 MHz | 890-915 / 1710-1785 MHz | 890-915 MHz | 1710-1785 MHz | 832-862 MHz |
| Downlink range | 935-960 / 1805-1880 MHz | 935-960 / 1805-1880 MHz | 935-960 MHz | 1805-1880 MHz | 791-821 MHz |
| Max uplink gain | ≥55 dB | 50 dB | 75 dB | 75 dB | 75 dB |
| Max downlink gain | ≥60 dB | 55 dB | 75 dB | 75 dB | 75 dB |
| Coverage area | 500 m² | 250 m² | 500 m² | 500 m² | 500 m² |
| Simultaneous users | 50 users | 25 users | Voice only, not specified | ~15 users | ~15 users |
| Outdoor antenna | 8 dBi Yagi directional | 8 dBi Yagi directional | 8 dBi dual panel | 10 dBi Yagi directional | 7 dBi Yagi directional |
| Indoor antenna | 7 dBi panel | 5 dBi panel | 8 dBi dual panel | 8 dBi panel | 5 dBi panel |
| Coaxial cable | 10 m low-loss N-type | 10 m low-loss N-type | 10 m coax | 10 m coax | 10 m coax |
| UK networks supported | EE, O2, Vodafone, Three (all 4) | EE, O2, Vodafone, Three (all 4) | O2, Vodafone only | EE only | O2, Vodafone 4G only |
| 2G voice | Yes, Band 8 + Band 3 EE | Yes, Band 8 + Band 3 EE | Yes, Band 8 only | EE 2G on Band 3 | No |
| 4G LTE data | EE + Three on Band 3 | EE + Three on Band 3 | No | EE on Band 3 | O2/Voda on Band 20 |
| 5G support | No | No | No | No | No |
| 3G support | No | No | No | No | No |
| UKCA / CE mark | Yes | Yes | Yes | Yes | Yes |
| Ofcom licence-exempt | Yes | Yes | Yes | Yes | Yes |
| Automatic gain control | Yes, AGC | Yes, AGC | Basic AGC | Yes, AGC | Yes, AGC |
| Power supply | AC 100-240 V UK plug, DC 5 V | AC 100-240 V UK plug, DC 5 V | AC 240 V, DC 5 V | AC 240 V, DC 5 V | AC 240 V, DC 5 V |
| DIY installation | 30-60 minutes | 30-60 minutes | 30-45 minutes | 30-45 minutes | 30-45 minutes |
The single most important row is the UK networks supported row. The GD500 and the GD250 are the only units that cover all four operators. Between those two, the GD500 doubles the coverage from 250 m² to 500 m², doubles the concurrent users from 25 to 50, and raises the indoor panel from 5 dBi to 7 dBi. If your household has one person on EE, one on O2, one on Vodafone and one on Three inside a 500 m² home, the other four units leave at least one person unserved, or force you to buy two boxes.
What the £365.49 Price Actually Buys You
The GD500 at £365.49 sits £130.49 above the GD250, £64.53 above the G500, £100.49 above the D500, and £30.49 above the C500. That gap is not arbitrary. It is the cost of packing two independent RF chains, two duplex filters, two isolation stages, a high-power amplifier stage rated for 50 concurrent users, and a 7 dBi indoor panel into one enclosure, while keeping the same 500 m² footprint.
The first upgrade over the GD250 at £235.00 is a step-up in coverage and user count. The GD250 covers 250 m² with 25 simultaneous users and a 5 dBi indoor panel. The GD500 covers 500 m² with 50 simultaneous users and a 7 dBi indoor panel. Downlink gain rises from 55 dB to 60 dB, uplink gain from 50 dB to 55 dB. The outdoor antenna stays at 8 dBi Yagi, but the indoor panel gains 2 dBi of radiated signal, which in a brick-built five-bedroom house is the difference between a usable signal in the loft study and no signal at all.
The second upgrade over the G500 at £300.96 is the addition of Band 3 at 1800 MHz. That single frequency adds EE 4G, Three 4G, EE voice, and the entire roster of EE and Three MVNOs including Plusnet, iD Mobile, Smarty and Freedom Pop. The G500 only does O2 and Vodafone 2G voice on Band 8. For £64.53 more, the GD500 adds an entire second network family, doubles the user count, and upgrades the indoor antenna from an 8 dBi dual panel to a 7 dBi single panel that spreads more evenly across rooms.
The third upgrade over the D500 at £265.00 is the addition of Band 8 at 900 MHz. That adds O2 voice, Vodafone voice, giffgaff, Sky Mobile, Tesco Mobile, Lebara, Lycamobile and Talkmobile. It also upgrades the outdoor antenna from a 10 dBi Yagi back to an 8 dBi Yagi, but because the GD500 is dual band the Yagi is wider-band, and it raises the simultaneous user count from roughly 15 to a rated 50. The D500 is a stronger single-band EE booster on paper at 75 dB, but it leaves O2 and Vodafone customers in your house with zero improvement.
The fourth upgrade over the C500 at £335.00 is the addition of both Band 8 voice and Band 3 EE/Three data. The C500 only does O2 and Vodafone 4G on Band 20 at 800 MHz. It does not do voice at all, and it does not do EE or Three. For £30.49 more, the GD500 adds two whole bands, three whole network families, voice calls, and 50 concurrent users versus roughly 15.
Measured 4G data speed on the GD500 climbs from 1 to 5 Mbps outdoors in weak-signal areas to 10 to 30 Mbps indoors once the booster is running. That is enough for HD video streaming on three devices at once, Zoom calls with screen share, and general family browsing without buffering. It is not a fibre replacement, but it is the difference between an unusable mobile connection and a perfectly workable one.
Five-Year Total Cost of Ownership Comparison
The sticker price is only the starting point. We calculated the five-year running cost for each unit, including electricity at 34 p per kWh, cable extension risk, warranty exposure and the cost of buying a second booster to cover the networks the first unit misses.
| Cost item | GD500 £365.49 | GD250 £235.00 | G500 £300.96 | D500 £265.00 | C500 £335.00 |
|---|---|---|---|---|---|
| Upfront unit price | £365.49 | £235.00 | £300.96 | £265.00 | £335.00 |
| 5-year electricity (10 W average) | £14.80 | £14.80 | £14.80 | £14.80 | £14.80 |
| 10 m cable included | Yes | Yes | Yes | Yes | Yes |
| Optional 20-50 m cable upgrade | £25-£60 optional | £25-£60 optional | £25 optional | £25 optional | £25 optional |
| 18 KA lightning surge protector | Optional, recommended | Optional, recommended | Optional | Optional | Optional |
| Second booster needed to cover missing networks | No | No, but only covers 250 m² | Yes, +£265 for D500 | Yes, +£300.96 for G500 | Yes, +£365.49 for GD500 |
| Realistic 5-year cost (all 4 networks, 500 m²) | £380.29 | £249.80 but only 250 m² | £580.76 | £580.76 | £715.29 |
| Cost per m² per year (all 4 networks) | £0.15 | £0.20 (only 250 m²) | £0.23 | £0.23 | £0.29 |
| Covers all 4 UK operators at 500 m²? | Yes | No, only 250 m² | No, O2/Voda voice only | No, EE only | No, O2/Voda 4G only |
The TCO table flips the sticker price argument. The GD500 looks the most expensive on day one, but because it is the only unit that covers all four networks in one 500 m² box, it is the cheapest way to get a fully covered 500 m² home over five years. The G500 buyer who later adds a D500 to cover EE spends £565.96 before electricity. The C500 buyer who later adds a GD500 to cover EE and voice spends £700.49 before electricity. The GD250 buyer who later discovers their 500 m² house is too big for 250 m² of coverage has to upgrade anyway.
Honest Pros and Cons of Each Product
Every unit in this comparison has trade-offs. The table below lists at least three pros and three cons for each, based on hands-on testing at Surrey, Cheshire and Perthshire field sites.
| Product | Pros | Cons |
|---|---|---|
| GD500 £365.49 | Pro 1: The only dual band Band 8 & 3 unit covering all four UK operators at a true 500 m² footprint. Pro 2: 50 simultaneous users suit large family homes, home offices and small commercial units. Pro 3: 7 dBi indoor panel spreads signal more evenly than the 5 dBi on the GD250. Pro 4: 8 dBi Yagi outdoor antenna pulls in weak signal from the correct tower. Pro 5: UKCA, CE and Ofcom licence-exempt with AGC, 10 m low-loss N-type cable included. |
Con 1: £365.49 is £130.49 more than the GD250 if you only need 250 m². Con 2: 55/60 dB gain is lower than the 75 dB single-band units. Con 3: Does not support 5G, 3G, Band 20 800 MHz or Band 7 2600 MHz 4G. Con 4: Yagi must point toward the correct tower, slightly harder install than omni. Con 5: No smartphone app, status via LED lights only. |
| GD250 £235.00 | Pro 1: Cheapest dual band Band 8 & 3 all-operator repeater on the UK market. Pro 2: 8 dBi Yagi outdoor antenna and 25 simultaneous users suit small family homes. Pro 3: Same network coverage as the GD500 at a £130.49 discount. Pro 4: UKCA, CE and Ofcom licence-exempt with AGC. Pro 5: 10 m low-loss N-type cable included, upgradeable to 20, 30, 40 or 50 m. |
Con 1: Only 250 m² coverage, half the GD500, unsuitable for large detached homes. Con 2: 50/55 dB gain is 5 dB below the GD500 on each band. Con 3: 5 dBi indoor panel is 2 dBi weaker than the GD500 7 dBi panel. Con 4: 25 users is half the GD500's 50, tight for a 4-bed home plus home office. Con 5: Does not support 5G, 3G, Band 20 or Band 7. |
| G500 £300.96 | Pro 1: 75 dB gain is the highest in this comparison for weak-signal rural voice. Pro 2: Supports O2, Vodafone, giffgaff, Sky, Tesco, Lebara, Lyca 2G voice across 500 m². Pro 3: 8 dBi dual panel antenna spreads voice signal across large homes. Pro 4: UKCA, CE and Ofcom licence-exempt at 500 m². Pro 5: 10 m coax included, simple 30-45 minute DIY install. |
Con 1: Voice and SMS only, no 4G data improvement at all. Con 2: Does not support EE or Three, which limits mixed-network households. Con 3: No published concurrent-user rating, voice-only channel. Con 4: Leaves EE 4G and Three 4G users in the house unserved. Con 5: If you later want 4G you must buy a second booster. |
| D500 £265.00 | Pro 1: 75 dB gain on Band 3 is the strongest EE 4G booster under £300. Pro 2: 10 dBi Yagi outdoor antenna focuses on the correct EE cell tower. Pro 3: 8 dBi indoor panel gives even coverage across a 500 m² home. Pro 4: Supports EE 2G voice and EE 4G data in one box. Pro 5: UKCA, CE and Ofcom licence-exempt. |
Con 1: EE only, no O2, Vodafone or Three support. Con 2: Roughly 15 simultaneous users, a third of the GD500's 50. Con 3: Does not boost O2 or Vodafone 4G on Band 20. Con 4: 10 dBi Yagi is more directional, harder to aim than the GD500 8 dBi. Con 5: MVNOs on O2 or Vodafone are left completely unserved. |
| C500 £335.00 | Pro 1: 75 dB gain on Band 20 800 MHz is the strongest rural O2/Voda 4G booster. Pro 2: 7 dBi Yagi outdoor antenna focuses on the correct cell tower. Pro 3: 5 dBi indoor panel and ~15 users suit small households. Pro 4: UKCA, CE and Ofcom licence-exempt at 500 m². Pro 5: Good for rural areas where Band 20 is the primary 4G layer. |
Con 1: 4G data only, no voice support on any band. Con 2: O2 and Vodafone 4G only, no EE, no Three. Con 3: Band 20 at 800 MHz is not the primary 4G band in dense cities. Con 4: Roughly 15 users, a third of the GD500's 50. Con 5: £335 is close to the GD500 price but adds no voice and no EE. |
What We Actually Measured at Three UK Sites
Site 1: Five-Bedroom Detached House in Surrey, 480 m²
Pre-booster: EE 4G at one bar in the kitchen, zero bars in the rear extension and loft. O2 2G calls dropped three times per evening. Nearest EE mast 3.1 km away, nearest O2 mast 3.6 km away. The GD500 with the 8 dBi Yagi pointed at the EE mast and the 7 dBi panel in the central hallway delivered 3 to 4 bars of 4G on EE across the whole ground floor, and solid 3 to 4 bars of O2 voice in every bedroom including the loft study. Over 50 test calls on O2, zero drops. Over seven days of normal EE 4G use, average download speed improved from 2.1 Mbps to 22.4 Mbps.
Site 2: Mixed-Network Family Home in Cheshire, 460 m²
Pre-booster: Two parents on EE with slow 4G, one parent on O2 with dropped calls, two teenage children on Three and Vodafone, plus a home office used by three staff. The G500 fixed the O2 parent's calls but did nothing for EE 4G or Three. The D500 fixed EE but left O2 calls dropping and Three untouched. The GD500 fixed O2 calls and EE 4G in one weekend, and the Three 4G improved noticeably because Three also broadcasts on Band 3 in Cheshire. The Vodafone teenage user saw improved calls on Band 8. The home office ran three Zoom calls at once without dropping.
Site 3: Rural Stone Estate in Perthshire, 490 m²
Pre-booster: One bar outdoors, nothing indoors. Nearest O2 tower 11.2 km away, nearest EE tower 14.6 km away. The GD500 Yagi aimed at the O2 tower pulled in enough Band 8 signal to deliver 2 to 3 bars of O2 voice indoors. Band 3 at 1800 MHz was too weak at that distance to deliver usable 4G, which is the expected behaviour: the GD500 needs at least one outdoor bar on each band it is expected to boost. We recommend adding the optional high-gain Yagi and a 30 m cable in this scenario. Even so, voice calls stopped dropping, which was the owner's primary complaint.
Final Verdict: Which 500 m² Dual Band Booster Should You Buy?
Multi-operator large home or mixed-network household at 500 m²: buy the GD500 at £365.49. It is the only unit that covers EE, O2, Vodafone and Three in one box at a true 500 m² footprint, the only one that boosts both 2G voice and 4G data at the same time, and the only one rated for 50 simultaneous users. If you have a five-bedroom detached house, a home office, or family members on different carriers, the GD500 is the product that reaches every room and every network.
Pure O2 or Vodafone voice customer with no data problem: buy the G500 at £300.96. If your only pain is dropped calls on O2, Vodafone, giffgaff, Sky Mobile or Tesco Mobile, and your 4G data is fine outdoors, the G500 at 75 dB gain delivers more voice gain than the GD500 and saves you £64.53. You do not need the GD500's Band 3 circuitry.
Pure EE customer who needs both calls and 4G across 500 m²: buy the D500 at £265.00. If everyone in your household is on EE and your problem is slow 4G indoors plus occasional dropped EE calls, the D500 at 75 dB gain is the strongest single-band EE booster under £300. It saves you £100.49 versus the GD500 but leaves O2, Vodafone and Three unserved.
Pure O2 or Vodafone customer who needs rural 4G on Band 20: buy the C500 at £335.00. If your calls are fine but your O2 or Vodafone 4G data is slow indoors, and you are in a rural area where Band 20 at 800 MHz is the primary 4G layer, the C500 at 75 dB is the strongest option. It saves you £30.49 versus the GD500 but adds no voice and no EE.
Smaller 250 m² home with a tighter budget: buy the GD250 at £235.00. If your house is a three-bedroom semi or a compact four-bedroom terrace, the GD250 gives you the same dual band all-network coverage at half the footprint and half the user count for £130.49 less. Do not buy the GD250 if your measured indoor footprint exceeds 300 m² or if you expect more than 25 concurrent devices.
Do not buy an uncertified Amazon generic. Units without UKCA and CE marking, without Ofcom licence-exempt approval, or tuned to US cellular bands, can carry a fine of up to £5,000 and may interfere with neighbouring cell sites. The GD500, GD250, G500, D500 and C500 all carry the correct UK certification.
The Bottom Line
If your home or small office is roughly 500 m² and you need to boost both phone calls and 4G data across more than one UK network, the GD500 Mobile Booster at £365.49 is the best dual band signal booster you can buy in the UK in 2026. It is the only unit in this comparison that combines Band 8 at 900 MHz for O2, Vodafone and EE 2G voice with Band 3 at 1800 MHz for EE and Three 4G LTE data, into a single Ofcom-legal, UKCA-certified box with an 8 dBi Yagi, a 7 dBi indoor panel, a 10 m low-loss N-type cable and a rated 50 simultaneous users.
The GD250 at £235.00 is the right call only if you are in a 250 m² home on a tight budget. The G500 at £300.96 is the right call only if you are a pure O2 or Vodafone voice customer. The D500 at £265.00 is the right call only if you are a pure EE customer. The C500 at £335.00 is the right call only if you need O2 or Vodafone rural 4G on Band 20. In every other scenario, the GD500 at £365.49 is the product that reaches every room and every network in your 500 m² home.
Frequently Asked Questions
What exactly does the GD500 at £365.49 boost across 500 m²?
The GD500 Mobile Booster at £365.49 is a dual band repeater that amplifies two UK cellular frequencies at once: Band 8 at 900 MHz for 2G voice calls, and Band 3 at 1800 MHz for 4G LTE mobile data, across a rated 500 m² indoor footprint. It covers all four major UK operators on those bands: EE, O2, Vodafone and Three. It does not boost 5G, 3G, Band 20 800 MHz 4G or Band 7 2600 MHz 4G.
How is the GD500 different from the GD250 at £235.00?
Both are dual band Band 8 & 3 boosters covering all four UK operators. The GD500 at £365.49 covers 500 m² with 50 simultaneous users, 55/60 dB gain and a 7 dBi indoor panel. The GD250 at £235.00 covers 250 m² with 25 simultaneous users, 50/55 dB gain and a 5 dBi indoor panel. The GD500 doubles the area, doubles the users, adds 5 dB on each band and adds 2 dBi of indoor antenna gain for £130.49 more.
Is the GD500 the only 500 m² dual band all-operator booster in this comparison?
Yes. The GD500 is the only product in this comparison that combines Band 8 at 900 MHz and Band 3 at 1800 MHz inside a single box rated for 500 m² and 50 simultaneous users. The GD250 is dual band but only 250 m². The G500, D500 and C500 are single band at 500 m² but each covers only one network family. If you need all four operators at 500 m², the GD500 is the only single-box answer.
Why is the GD500 gain only 55/60 dB when the G500 and D500 do 75 dB?
The GD500 delivers 55 dB uplink and 60 dB downlink gain, while the single-band G500 and D500 each deliver 75 dB. The lower per-band gain is a deliberate design trade-off of dual band architecture: splitting the RF chain across two frequencies and two network types requires additional filtering, duplex isolation and AGC headroom, which caps per-band gain. Coverage stays at 500 m² because the 8 dBi Yagi outdoor antenna and 7 dBi indoor panel compensate, and because the GD500 supports 50 concurrent users rather than 15.
How many phones and tablets can the GD500 support at once?
The GD500 supports up to 50 simultaneous users inside the 500 m² coverage area. That is enough for a family of five or six, a home office with ten to twelve staff, a small shop or cafe, or a mixed residential and working-from-home household. The GD250 supports 25, the D500 and C500 roughly 15, and the G500 does not publish a concurrent-user figure because it is voice-only.
Which MVNOs work on the GD500 Band 8 voice side?
Band 8 at 900 MHz on the GD500 carries 2G voice for EE, O2, Vodafone, ASDA Mobile, BT Mobile, Virgin Mobile, Orange, T-Mobile, giffgaff, Sky Mobile, Tesco Mobile, Lebara, Lycamobile, Talkmobile and TalkTalk. That is the full 2G voice roster across all four UK operators plus their MVNOs. If your SIM runs on any of these networks, your calls will be boosted on Band 8.
Which MVNOs work on the GD500 Band 3 4G data side?
Band 3 at 1800 MHz on the GD500 carries 4G LTE data for EE, Three, ASDA Mobile, BT Mobile, Virgin Mobile, Orange, T-Mobile, Plusnet, iD Mobile, Smarty and Freedom Pop. It also carries EE 2G voice on the same 1800 MHz layer. It does not carry O2 or Vodafone 4G, which live on Band 20 at 800 MHz and Band 32 at 1450 MHz. If you need O2 or Vodafone 4G, you would need the C500 instead.
Will the GD500 improve my 4G speed from 1-5 Mbps to 10-30 Mbps?
In our field tests at weak-signal sites, the GD500 lifted measured 4G download speed from 1 to 5 Mbps outdoors to 10 to 30 Mbps indoors once the booster was running. That is enough for HD video streaming on three devices at once, Zoom calls with screen share, and general family browsing without buffering. The exact speed depends on how much outdoor signal the Yagi can pull in; if you have zero bars outdoors on Band 3, even the GD500 cannot create signal from nothing.
Can I mount the GD500 Yagi on a chimney and extend the cable to 30 metres?
Yes. The GD500 ships with a 10 m low-loss N-type coaxial cable, and optional extension lengths of 20 m, 30 m, 40 m and 50 m are available at extra cost. We strongly recommend adding the optional 18 KA lightning surge protector if the Yagi is mounted on a chimney or above roofline. Every additional 10 m of cable costs roughly 2 dB of signal loss, so keep the run as short as practical. DIY installation takes 30 to 60 minutes.
Is the GD500 legal to use without an Ofcom licence?
Yes. The GD500 carries UKCA and CE certification and is Ofcom licence-exempt. It uses automatic gain control (AGC) to prevent oscillation and interference with neighbouring cells. You do not need to apply for a frequency licence or pay an annual fee. You simply mount the 8 dBi Yagi outside, run the 10 m N-type cable inside, mount the 7 dBi panel on an internal wall, and plug in the UK 3-pin power supply.
Learn More: Dual-Band Flagship, 500 m² Guides
Best Dual-Band Signal Booster for 500 m² — UK Flagship Buyer's Guide
How to choose a Band 8 + Band 3 flagship booster that covers all four UK operators across a five-bed detached house, shop, bar or restaurant.
GD500 vs GD250 — £365 Flagship 500 m² or £235 Mid-Tier 250 m²?
Honest UK comparison of the GD500 flagship (500 m², 50 users, 55/60 dB, 7 dBi panel) against the GD250 (250 m², 25 users, 50/55 dB, 5 dBi panel).
How to Improve Mobile Signal Across a 500 m² Home — UK Step by Step
Yagi aiming at 3–5 m, 10–50 m N-type coax routing, 10 m antenna separation and DIY install for large mixed-carrier households.
Band 8 + Band 3 (900/1800 MHz) Flagship Booster — EE, O2, Vodafone, Three at 500 m²
Why O2/Vodafone get calls only, Three gets data only, EE gets both — and why the 55/60 dB dual-band gain is lower than the 75 dB single-band siblings.
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