Just like Apple iPhone 3G, 3GS and 4.What happens to the listed phones is that, when you buy it from another country, and it is locked to another carrier, you will not be able to use it with your local network, you will either need to do a factory unlock on it, or simply unlock it through jailbreak with ultrasnow, snowbreeze evasion etc… if you do none of the above, you won’t be able to use your iPhone with any other carrier other than the one it is locked to.
Similar event is happening to some android phones, especially Samsung galaxy s3. Could you believe i bought, a Samsung galaxy s3 GT-i9300 which is a global variant, that is not locked to any carrier whatsoever. It came with the annoying ICS and i try and upgrade this to Android 4.1.2 official jellybean. The upgrade process went very smoothly but when i reboot my phone, Alas, i got no servicee, meaning i cannot make call, i can’t use Bluetooth, i can’t use wifi. In short, i cannot use anything related to connectivity. I downgraded this phone, but still, no luck i was so frustrated until i found a solution which solved 70% of my problem. I was able to restore mobile network, and partially restore WiFi, However i couldn’t use my Bluetooth. I was so happy that at least i can use my phone for what is primarily meant for. Let me share with you how i did this;
Disclaimer & Warning!
It is strongly advised that you use this tutorial only for Samsung Galaxy s3 Although i used it successfully on a friend’s HTC, But you use it on other android phones at your own risk. Trying using this tutorial in any other Android device May result in unpleasant outcomes of which am not liable.So before you proceed, Check your device’s model number in: Settings » About phone. Try this at your own risk. Although, it is very unlikely that your device will be damaged if you follow all the instructions here to the last letter in this tutorial
Important Pre-Requisites
- Root your Samsung galaxy s3 smartphone preferably with framaroot Here
- Download and install Busybox full installer from googleplay store or from any other source
- Download ARIZAPatch.apk.
STEPS TO RESTORING YOUR LOST MOBILE NETWORK:
- Root your phone
- Install busybox (busybox pro recommended because it comes handy with the full installer)
- Install and Launch ARIZAPatch and select the offline patch mode.. It will verify that your phone has been rooted and busbox properly installed.
- That is all, after reboot, your phone will rediscover its lost cellular network. Like i said earlier, you can try this on other android phones having similar problems. But do this at your own risk.
Read also: How to flash HTC Androids
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