List of recommended SIM mobile network operators by user experience to date
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Existing user feedback collected by country and to be adjusted accordingly.
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WatchPhone S1 is unlocked for all countries/mobile carriers and supports up to 3G network.
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WatchPhone S1 (North & South America & Canada) supports the following 2G: 900/850/1800/1900MHz | 3G: 850/1900MHz.
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WatchPhone S1 supports the following 2G GSM bands: 900/ 1800/ 850/ 1900MHz. Supported 3G WCDMA band: 2100/ 1900/ 1700/ 850/ 800MHz. Do check with preferred local mobile network operator if SIMs are on the supported bandwidth.
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Important note: WatchPhone S1 supports Prepaid/Postpaid Mobile Smartphone SIMs.
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Smartwatch, Traveler, IoT or any other special SIMs are NOT recommended
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For use with Micro SIM cards
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Caller ID is required for voice call
Country |
Recommended SIM |
| USA (2G: 850MHz|3G: 1900MHz) | Speedtalk | Cricket | Cellular One |
| Canada (2G: 850MHz|3G: 1900MHz) | Rogers Mobile |
| Colombia | Movistar CO |
| Austria | A1 Mobilkom |
| Australia | Optus AU | Telstra AU |
| Argentina | Movistar AR |
| Albania | Vodafone AL |
| Brazil | Nextel | TIM |
| Belgium | Proximus |
| Cyprus | CyTa | MTN |
| Cameroon | Orange CM |
| Denmark | Telenor | TDC Mobiltid |
| Egypt | ETISALAT EG | Vodafone EG |
| France | Free Mobile | S.F.R |
| Finland | DNA |
| Japan | BIGlobe | OCN モバイル ONE | IIJmio | mineo Dプラン |
| Germany | Vodafone DE |
| Greece | Cosmote GR |
| Hong Kong | PCCW Mobile |
| Hungary | Telenor HU |
| Lebanon | Alfa | Touch |
| Latvia | LMT | Tele2 |
| Italy | Wind IT | TIM IT |
| India | Airtel Mobile IN |
| Israel | Cellcom | Golan |
| Indonesia | IndoSat |
| Ireland | Vodafone IE |
| Mexico (2G: 850MHz|3G: 1900MHz) | Telcel MX |
| Myanmar | MPT |
| Malaysia | Celcom |
| Morocco | Orange Méditel |
| Netherlands | KPN NL |
| Norway | Telenor NO |
| Oman | Oman Mobile |
| Slovakia | 4Ka |
| Switzerland | Swisscom CH |
| Saudi Arabia | STC SA |
| Singapore | SingTel SG | Circles Life |
| Spain | Movistar |
| South Africa | AirTel Mobile |
| Philippines | SMART PH |
| Poland | NJU Mobile |
| Peru | Movistar PE |
| Panama City | Movistar PA |
| Thailand | AIS |
| Taiwan | FarEasTone |
| Turkey | TurkCell | Vodafone TR |
| Ukraine | lifecell |
| United Arab Emirates | Du. Mobile |
| United Kingdom | Vodafone UK | GiffGaff |
| Vietnam | Viettel VN |
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