[Q] Galaxy S2 don't read my Bell sim card

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http://forum.xda-developers.com – Good day, I have an unlock Samsung galaxy s2 on Android 4.1.2, It's originally from Rogers, but I've been using it with my Bell sim card for a few months. This morning after a night charge, my phone wasn't able to read my bell sim card anymore... I reboot a undred times (almost), Flash the ROM, did it again this time wiping all data on my phone, but nothing changed... There is no APN option, when I go to Access point names, in mobile network settings, I tried a few times to enter the Bell APN setting, but each time I would press on save, it would not save, only disapear. Fi (HowTos)