All day yesterday, my gs4 kept alerting me that it could not detect the SIM card. The phone would restart and then it would be fine for the next few hours. However, last night, I was charging my phone and the screen was on. I did not get a message about the SIM not being detected. I picked up my phone to check it and it was off (without the charging light on). I took out the battery and blew in all the sockets just in case dust was stopping the charge. I did this multiple times. 2 or 3 out of the 10 times I tried this, it would vibrate and say "Samsung Galaxy S4" as if it was about to turn on. After this, however, it would just turn off again. Anyone else experience this problem or know how to fix it? Thanks.
Read more: My galaxy s4 won't power on or charge at all?