If your GSM phone doesn’t have a SIM card installed, you can’t connect to mobile networks for voice and data services, but you can connect to a Wi-Fi network to sign into your Google Account and to use all the features of your phone, except placing a cell phone call. (CDMA phones don’t rely on a SIM card to connect to mobile networks.) If you start a GSM Android phone the first time without a SIM card, you’re asked if you want to touch Connect to Wi-Fi to connect to a Wi-Fi network (instead of to a mobile network) to set up your phone. To learn more,.
