Verdict up front: the CW200 at £205.99 is the #1 in this 3G+4G 200m² roundup and the only chassis that pairs Band 20 at 800 MHz for EE, O2, Vodafone and Three 4G LTE data with Band 1 at 2100 MHz for 3G UMTS data, voice and SMS across all four UK networks from one device in a 200m² (2,153 ft²) two-bedroom flat, small home, home office or shop for up to 20 simultaneous users. It holds ≥60 dB uplink and ≥65 dB downlink gain, outputs ≥10 dBm behind a ≤5 dB noise figure, ships the 5 dBi omni outdoor aerial, the 3 dBi whip indoor antenna, a 10m outdoor plus 5m indoor low-loss coax and the AC 100–240V to DC 5V UK plug, and offers the high-gain Yagi, longer external cable and 18KA surge protector as paid upgrades.

The CW100 at £185.99 keeps the same Band 20+1 logic but scales down to 100m², 10 users and ≥45/≥50 dB; the CW200 adds £20 for 2x coverage (200m²), 2x users (20), a +15 dB gain step (≥60/65 against ≥45/50) and the extra 5m indoor cable. The CG200 at the same £205.99 pairs Band 20 data with Band 8 at 900 MHz for O2/Vodafone 2G calls, leaving EE and Three without a boosted voice fallback; the CD200 at the same £205.99 pairs Band 20 data with Band 3 at 1800 MHz for EE data and EE 2G, leaving O2/Vodafone voice data-only on the call layer. The CW200 takes the universal path: instead of one legacy 2G call band, it amplifies Band 1 at 2100 MHz, the 3G UMTS layer every UK network used before VoLTE, so EE, O2, Vodafone and Three all keep a call and data fallback where 4G alone weakens.

Across a Devon cottage, a Yorkshire home, a Welsh valley, a Scotland farm, a Cornwall home office and a rural village, the CW200 lifted data from one bar to five and kept calls connected where 4G alone faded, a result a data-only Band 20 box cannot reproduce because it carries no fallback call layer. The CG200 kept O2/Vodafone 2G calls but left EE calling native; the CD200 kept EE data but left O2/Vodafone calling native; the CW200 keeps a 3G fallback for all four networks rather than betting on one legacy operator band, and its higher ≥60/≥65 dB gain cleans a weaker incoming donor before that signal reaches 200m².

All Boost4U units here are UKCA and CE certified, Ofcom licence-exempt, ship free within the UK on 1 to 2 day handling plus 10 to 15 day transit, and carry a 365-day mail return window. The CW200 installs in 10 to 15 minutes without tools, runs from the AC 100–240V 50/60Hz to DC 5V UK Type plug, operates between −10°C and +55°C, and packs to a 3.0 kg shipping weight. The difference between these models is which bands each chassis was tuned to amplify, how large an area and how many devices they serve, how much gain they clean a weak donor with, and what £205.99 actually buys in a 200m² home or small office.

This roundup compares the Boost4U CW200 at £205.99, the Boost4U CW100 at £185.99, the Boost4U CG200 at £205.99, the Boost4U CD200 at £205.99, a cheap generic single-band box around £120 estimated, and an imported home booster around £250 estimated. We judged each unit on seven fixed questions: which frequency bands it amplifies, which operators receive 4G data versus a call fallback, how much gain and output it delivers, what indoor area and how many simultaneous users it supports, which antennas and cables ship, how the CW200 sits between the smaller CW100 and the legacy-voice CG200/CD200, and whether a Yagi, longer cable and surge protector can be added.

Frequency bands decide networks before price. Band 20 at 800 MHz (uplink 832 to 862 MHz, downlink 791 to 821 MHz) carries EE, O2, Vodafone and Three 4G LTE data in rural coverage. Band 1 at 2100 MHz (uplink 1930 to 1990 MHz, downlink 2110 to 2180 MHz) carries 3G UMTS data, voice and SMS for EE, O2, Vodafone and Three; it is the universal pre-VoLTE layer, so a call on any network can fall back to 3G rather than dropping entirely. Band 8 at 900 MHz carries only O2/Vodafone 2G; Band 3 at 1800 MHz carries EE 4G and EE 2G. A chassis tuned to one band cannot manufacture the others, no matter how many bars it claims.

Gain measured ≥60 dB uplink / ≥65 dB downlink on the CW200 cleans the weak incoming donor harder than the CW100's ≥45/≥50 dB, a +15 dB step that roughly multiplies the usable signal headroom across the doubled 200m² area; output power ≥10 dBm sets how strongly the cleaned signal reaches the indoor whip. The rated 200m² (2,153 ft²) assumes reasonable donor signal outside and sensible antenna separation; it covers a two-bedroom flat, small home, family house with mixed-network devices, home office or shop, not a whole multi-floor house. The 20 simultaneous-user rating counts family phones, tablets, home-office laptops and a small crew attaching to one boosted cell before the serving network scheduler congests.

Mounting and upgrades: the CW200 standard kit ships the 5 dBi omni outdoor aerial, the 3 dBi whip indoor antenna, the 10m outdoor low-loss coax plus the 5m indoor run, and the UK power adapter; the high-gain Yagi directional aerial, 20/30/40/50m external cable and 18KA lightning surge protector are paid variants, with the max combo (50m + Yagi + protector) at £325.99. On a strong −70 to −90 dBm donor the product note reads "Expandable coverage by adding indoor antenna, splitter, cable if the outside signal is strong," supporting up to 2 indoor antennas through a 2-way splitter and extra cable; a weak −97 to −105 dBm donor uses the optional Yagi aimed at the nearest mast.

We treated the CW200, CG200 and CD200 at £205.99 and the CW100 at £185.99 as fixed shop prices, the generic box around £120 and imported kit around £250 as estimates beside or below the dual-band sticker without a UKCA Band 20+1 mark. Every unit below is judged on honest strengths and weaknesses; we do not recommend buying two single-band boosters when one dual-band £205.99 unit does the same job more cleanly.

The table below lays out the complete technical picture across all five models. The Boost4U units are UKCA and CE certified and Ofcom licence-exempt; the generic and imported kits are not UKCA-tuned for the Band 20+1 stack. The decisive rows are frequency bands, 3G all-network fallback, gain step, 200m² coverage, 20 users and upgrade path.

The single most important row is the 3G all-network fallback: only the CW200 and CW100 amplify Band 1 so EE, O2, Vodafone and Three all keep a call and data fallback, and only the CW200 pairs that universal Band 1 with 200m², 20 users and the ≥60/≥65 dB gain step; the second deciding row is gain and area, where the CW200 doubles the CW100 for £20 rather than chasing a legacy 2G band.

The shop prices are fixed as listed. The CW200, CG200 and CD200 all sit at £205.99; the CW100 sits at £185.99, exactly £20 below; the generic box around £120 and imported kit around £250 sit below or above the dual-band sticker without a UKCA Band 20+1 mark.

The £20 between CW100 and CW200 buys exactly 2x coverage (200m² against 100m²), 2x users (20 against 10), a +15 dB gain step and the extra 5m indoor cable; it does not buy a different band plan, because both carry Band 20+1. The £0.00 tie between CW200, CG200 and CD200 buys a different fallback band rather than more area, users or gain. The CG200 buyer later adds Band 1 for EE/Three fallback, and the CD200 buyer later adds Band 1 for O2/Vodafone fallback, paying a second unit on top of the same £205.99 already spent. The single CW200 at £205.99 wins the mixed-network 200m² home, small office or rural cottage that needs a universal 3G fallback rather than betting on one legacy operator's 2G band.

The CW200 is the unique Band 20+1 member of the Boost4U 200m² dual-band family. At £205.99 it pairs Band 20 at 800 MHz for EE, O2, Vodafone and Three 4G LTE data with Band 1 at 2100 MHz for 3G UMTS data, voice and SMS across all four networks. Its uplink gain reaches ≥60 dB and downlink gain ≥65 dB, with ≥10 dBm output per band behind a ≤5 dB noise figure; the 3G layer is the universal pre-VoLTE fallback that every UK network operated before HD voice, so a call on EE, O2, Vodafone or Three can land on 3G rather than dropping entirely when 4G fades.

The rated coverage of up to 200m² (2,153 ft²) targets a two-bedroom flat or small apartment, a family home with mixed-network devices, a rural weak-signal cottage or holiday home, a small office or home office and shop, and a large garage or workshop with metal walls. The 20 simultaneous-user rating counts family phones, tablets, home-office laptops and a small crew attaching to one boosted cell before the serving network scheduler congests. The full kit ships the 5 dBi omni outdoor aerial, the 3 dBi whip indoor antenna, the 10m outdoor low-loss coax plus the 5m indoor run, and the AC 100–240V 50/60Hz to DC 5V UK Type plug; upgrades are the high-gain Yagi directional aerial, 20/30/40/50m external cable, and the 18KA lightning surge protector, with the max 50m + Yagi + protector combo at £325.99.

On the service list, the CW200 delivers 3G and 4G for EE, O2, Vodafone, Three, Asda, BT, FreedomPop, giffgaff, iD Mobile, Lycamobile, Talkmobile, Orange, Plusnet, Sky, Smarty, Tesco, The People's Operator, T-Mobile and Virgin; Lebara and TalkTalk receive 3G only. It carries no 2G voice on Band 8 or Band 3, and no 5G; VoLTE calls work where the network already supports them, and Band 1 keeps a 3G fallback where VoLTE does not. On a strong −70 to −90 dBm donor, the note "Expandable coverage by adding indoor antenna, splitter, cable if the outside signal is strong" supports up to 2 indoor antennas through a 2-way splitter and extra cable; a weak −97 to −105 dBm donor uses the optional Yagi aimed at the nearest mast.

The CW100 shares the CW200's Band 20+1 band plan and universal 3G fallback but sits one tier down. At £185.99 it reaches 100m² (1,076 ft²) for 10 users at ≥45 dB uplink / ≥50 dB downlink gain, ≥10 dBm output and the 10m outdoor cable stack, without the 5m indoor run. It is the correct unit for a single room, studio flat or small home office where 200m² and 20 users are never reached.

The £20 gap between CW100 and CW200 is a capacity and gain step, not a network change: both amplify the same Band 20 data and Band 1 3G, so a buyer who only needs one room can save £20 on the CW100, while a buyer covering two bedrooms, a living room and a home office needs the CW200's doubled area, doubled users and higher gain to hold the same universal fallback.

The CG200 matches the CW200 on price, area, users, gain, output and kit but swaps the fallback band. At £205.99 it tunes Band 20 at 800 MHz for EE, O2, Vodafone and Three 4G data and Band 8 at 900 MHz for O2/Vodafone 2G voice calls and SMS. It also reaches 200m² for 20 users at the ≥60/≥65 dB gain class, ≥10 dBm output and the 10m plus 5m cable stack, so it competes on size, power and price, not on universal fallback.

The critical difference is coverage of the call layer: on O2 and Vodafone, the CG200 boosts 2G voice on Band 8, but on EE and Three it provides Band 20 data only with no boosted call fallback, because EE 2G rides Band 3 and the CG200 does not tune Band 1 either. The CG200 is the right box when the household SIMs are O2/Vodafone-led and EE/Three calling never appears; it cannot give an EE or Three phone a universal 3G fallback.

The CD200 also matches on price, area, users, gain and output but tunes Band 20 data with Band 3 at 1800 MHz for EE 4G data and EE 2G voice. At £205.99 it reaches 200m² for 20 users at ≥60/≥65 dB, ≥10 dBm and the 10m plus 5m cable stack. On O2 and Vodafone it provides Band 20 data only, with no boosted call fallback and no Band 1 3G layer; Three likewise receives data only.

The CD200 is the right box when the household SIMs are EE-led and O2/Vodafone appear only as data. It cannot serve an O2/Vodafone caller's legacy call and cannot give every network a 3G fallback, which is the CW200's distinctive Band 1 role.

The cheap generic single-band box around £120 estimated amplifies one Band 20 data channel on a marketplace chassis with vendor-rated, often unmeasured gain, no UKCA mark for the Band 20+1 stack, and a 10m cable and UK plug of uncertain origin. It carries no Band 1 3G fallback, so calls are never boosted regardless of price; its 10- to 20-user and 200m² claims are typically measured in open space, not across UK masonry.

The imported home booster around £250 estimated is a recognised US brand but is tuned to North-American band planning and 120V supply; it is not UKCA-licence-exempt for Band 20+1 as sold for the UK, and import duty, VAT and warranty gaps leave it above the £205.99 sticker without delivering the universal EE/O2/Vodafone/Three 3G fallback.

The matrix below separates 4G data, the Band 1 3G fallback and legacy 2G voice for every operator on the listed SIMs, because a booster that lists "4G" often leaves the call path un-amplified.

The CW200 and CW100 are the only units that keep a Band 1 3G fallback for all four direct networks; the CG200 owns the O2/Vodafone 2G row and the CD200 owns the EE 2G row, but neither covers every operator's call path, and neither pairs that legacy band with a universal 3G layer.

The CW200 product page carries 10 submitted reviews averaging ratingValue 4.7 (seven five-star and three four-star, reviewCount 10). The quotes below are reproduced verbatim from the product page and show where the booster worked and where the limits appeared.

The four-star notes are honest boundary signals: David W. needed the long-cable upgrade to reach a remote roof, Lisa P. found two rooms enough and a whole house needed more, and Andrew G. noted 12-day transit despite solid performance. None reports a failed data or 3G-fallback channel on the intended Band 20+1 SIMs; Lebara and TalkTalk ride Band 1 3G rather than 4G.

Day one, the CW200, CG200 and CD200 all sit at £205.99, the CW100 sits at £185.99, the generic around £120 and imported around £250 sit below or above. The five-year row decides the total.

The growth paths both exceed the single CW200: the CW100 buyer who later fills a two-bedroom flat must step up a tier rather than add a second unit, and the CG200 or CD200 buyer later adds a Band 1 unit for the missing network on top of the same £205.99 already spent. The single CW200 at £205.99 wins the mixed-network 200m² home, small office or rural cottage on both day-one and five-year cost; the CW100 wins only when one 100m² room is the whole job, and CG200/CD200 win only when one operator's legacy 2G is the whole story.

The CW200 base at £205.99 includes the booster, the 5 dBi omni outdoor aerial, the 3 dBi whip indoor antenna, the UK power adapter, the 10m outdoor low-loss coax and the 5m indoor coax; three paid variants exist: the high-gain Yagi directional aerial, 20/30/40/50m external cable, and the 18KA lightning surge protector, with the max 50m + Yagi + protector combo at £325.99. On a strong −70 to −90 dBm donor, a 2-way splitter and extra coax feed up to 2 indoor antennas for adjacent rooms; a weak −97 to −105 dBm donor uses the optional Yagi aimed at the nearest mast.

Basic setup takes 10 to 15 minutes: mount the omni with a clear mast view, keep the whip a sensible distance inside, run the 10m outdoor and 5m indoor coax, power from the UK plug, and read steady green before testing. The verbatim expansion note reads "Expandable coverage by adding indoor antenna, splitter, cable if the outside signal is strong."

All units carry UKCA, CE and RoHS marks, are Ofcom licence-exempt, ship free within the UK on 1 to 2 day handling plus 10 to 15 day transit, and carry a 365-day mail return window. The £205.99 CW200 price is valid to 2027-10-20, is listed InStock as NewCondition, and ships to GB, DE, FR, IT, ES, NL, BE, AT, SE, DK, FI, IE, PT, PL and CZ.

For a mixed-network two-bedroom flat, small home or home office where EE, O2, Vodafone and Three all need 4G data plus a universal 3G fallback across 200m² for 20 users at ≥60/≥65 dB, the CW200 at £205.99 is the answer, pairing Band 20 data with Band 1 3G in one Ofcom-legal UKCA box, no second purchase planned.

For a single room, studio or one-room home office at half the area and half the users, the CW100 at £185.99 keeps the same universal Band 20+1 fallback at the lower ≥45/≥50 dB gain and saves £20.

For an O2/Vodafone-led household needing 2G calls rather than universal 3G, the CG200 at £205.99 covers that narrower job at the same 200m², 20 users and gain, provided EE and Three calling never appears.

For an EE-led household needing EE 2G calls rather than universal 3G, the CD200 at £205.99 covers that narrower job at the same spec, provided O2/Vodafone calling never appears.

For 5G, a whole multi-floor house, or an imported North-American kit: none of the stretch matches UK Band 20+1 universal fallback, so choose the matched UKCA unit rather than overloading a US-tuned box.

The scale take: at £205.99 the CG200 serves only O2/Vodafone 2G and the CD200 serves only EE 2G, while the CW200 keeps a Band 1 3G fallback for EE, O2, Vodafone and Three across 200m² for 20 users; below it the CW100 at £185.99 keeps the same universal band on a 100m²/10-user scale, so pick the smaller unit for one room and the CW200 for the full two-bedroom flat or small office.