I bought a pay as you go Samsung Galaxy J3 on 16 May 2016. Up until beginning of Sept. everything was fine. Now it turns itself off and frequently decides that there is no SD card. Since yesterday the only way to start it is to remove the battery, put the battery back and then turn turn it on and hey ho it goes but for about 10 minutes still says that there is no SD card- oops then it finds the SD card.
I have taken it back to where I bought it which is about 30 miles away all they would do was to send it back to you and I would have to go back to collect it when it was done, something that I find difficult. I've been to a nearer branch but they could not care less.
Welcome to the Community Forum and thanks for your post. I'm sorry that your Samsung J3 is having problems recognising the microSD card.
Just a few things to check on this:
Can you try a different microSD card to see if you have the same issue (or alternatively try the current microSD card in another handset to see if the same problem occurs).
Some reports online with this issue state that formatting the SD card helped--but this wasn't the case for everyone reporting the issue, but you could try this (just make sure to save your data on the card elsewhere so that you can put it back on after formatting). With this option, I can't guarantee that this will work.
If your J3 is a Virgin Mobile handset, then give us a call on 789 (Freephone from a Virgin Mobile) or 0345 6000 789 (from any other phone) or 150 (free from a Virgin Media landline) to speak to our Mobile Tech team and we can go through further diagnostics for you and if the phone requires a repair, then we can arrange this with you over the phone.
Please let me know how you get on with this.
Virgin Media Forum Team
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This could be just a software glitch, remove your SD card, ensure your have backed up your contacts, emails and such to your gmail account then go into settings, back up and reset or similar, and then reset the phone, if you call into the call centre they will ask you to do this anyway