Why does my new go phone samsung galaxy express 3 has an invalid esn?
I recently bought this go phone at Best Buy. The first time I turned it on it said "no sim" so I removed it and installed it twice and still had the same message. I tried a different sim card from another carrier and it did not show the message of "no sim" anymore. I put the att sim card back and this time it recognized it so I tried to follow the steps for activation with no success. Later I went in the att website and checked the imei and it says "Your device is compatible, but we are unable to find the correct SIM card" I googled this and I ended up in a website where one can check esn typing in the IMEI and it says "invalid esn". what happened?