Dear customers using iPhone 5s,
Apple has released the new carrier bundle and is working in iphone 5s.The current carrier bundle of B-mobile 32 is upgraded to 32.1 (You will get the information from Setting->About).
Please follow the steps below:
1. Your phone should have internet connection from wifi to download the carrier 32.1 bundle.
2. The moment you put on your phone , carrier setting download will pop up automatically. Once it is downloaded you will see the signal in the phone.