Hello every body. I'm new here. And i want you to help me. I have Samsung galaxy Ace gt-s5830i. It works fine until i flashed it with a new ROM. Now it show a circle icon instead of network signal. And i can't make calls or recieve them even emergency calls. Rca tablet serial number location.

I tried to flash a stock ROM but it always give the same problem. I tried a lot of methods in the Internet without result. The Only things that gone is the network connection.

The IMEI remains the same and wifi mac address. Thank you and sorry for bad English.

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