The problem began soon after I removed my sim card without turning off the phone, and inserted another sim. The sim card was not detected then I returned my regular sim and was also not detected. It keeps on saying no sim card - Emergency calls only. I have tried everything from restarting, factory reset, reinstalling stock rom and *#*#4636#*#* with no luck. Like I said before the strange thing is that it only detects two operator sim cards namely Tigo and TTCL but does not detect other operator sim cards (tried 3 different onces). Does anyone know what the problem might be and how to solve this problem?