Hi to all. MY Galaxy ACE not always send text massages. Gradually the text massage start to FAILED more often. The local cell phone shop, delete the cel and down load the program again and the issue still there. They told me that the cel work OK with their SIM card but start to fail again with mine. They said that mi SIM card is damage and is affecting my cel. Is that true??? The SIM card could damage the cel programation??? Any guide is appreciated.