My cousin owns a Sprint Samsung S10 Unlocked but it doesn't detect my T-mobile sim card for some unknown reason, when I say it doesn't detect I mean it doesn't let me do calls or even use the data. The weird thing is when I reboot the phone it boots up with the T-mobile Logo and it downloads the T-mobile apps ( Unlock, Visual Voicemail, T-mobile App, etc).
The thing is we already tried different company SIM cards ( AT&T, Boost, CLARO,) and they work perfectly on it. We already tried different things like:
- Booting the phone, wait for it to load and put the SIM Card in
- Turning the phone OFF then put the SIM Card in and then booting up
- Check if the APN settings are correct ( Normally when I put the SIM Card it automatically loads the correct APN Settings)
- Putting in Airplane mode then back to normal.
The Phone Details are:
Model Name: SM-G975U Android Version: 9 Android Security Patch: November 1, 2019 Baseband Version: G975USQS2BSIV
Is there any particular reason it doesn't work and is there any way to fix this?