Earlier my iPhone 4s turned off while I was using it - hours after updating my IOS to 7.4.
I thought it was just out of charge, because I hadn't taken any notice of how much it had. When I found my charger I plugged it in and it came on. It came up with the Apple sign for a bit and I unlocked it when it turned on. I was about to click onto iMessage but then went off. I kept it plugged in and it went off again, and again. It just keeps doing this but the Apple logo will come up and then it will just go blank and try turn on again. It doesn't do anything when the charger isn't in and it won't come on when I connect it to my laptop.
It is second hand but it's not damaged in any way and it has worked perfectly up until now. My mum thinks it's the IOS 7.4 update I did this morning but I don't know.
I've tried resetting it but nothing comes up because it won't turn on properly.
I managed to look at my iMessages and I found that my friend thinks I'm ignoring her, I tried to reply and it went off and won't even stay on long enough for me to click it! Please help!:'(
Added (1). Videodude747,
It won't connect to my computer: L