Galaxy s4 no sim card inserted?

A lot of people are having the same problem: http://forums.androidcentral.com/samsung-galaxy-s4... / http://forums.androidcentral.com/verizon-samsung-g... / http://answers.yahoo.com/question/index?qid=201309... . It looks like a hardware issue. I suggest you go into a corporate AT&T store (not an authorized retailer) and they sometimes are able to give you a new S4 free of charge, as long as the water indicators on the phone aren't triggered. If you don't have a corporate AT&T store near you, call up AT&T and tell them your problem. They should replace it even without a warranty because it isn't your fault that the phone is giving you this error.

Phone Says No Sim Card

Premalink to my original answer in another thread: [url]http://forum.xda-developers.com/showpost.php?p=558...

I haven't been able to confirm it yet but I think I might have a solution. I was going to wait a couple of days before posting but then I figured that I can post and collectively we can get a better sample size of data to come to a conclusion. I had long suspected that this was somehow due to location services as the problem first began for me when I downloaded Find my Friends and Glympse. I tried everything under the sun, factory reset, new roms, disable xposed, adding apps back one by one to find the cluprit (over 400!), paper in the sim tray to improve connection, everything!

The other day I had just freshly restored my phone from a Nandroid backup as I had noticed that when first restoring the phone would seem to remain problem free for a couple of days before I started getting the messages again. Well yesterday I was problem free until about 20 minutes after I first downloaded an application from the playstore following the reset. Then it hit me, all the other times the problem starting popping up again was always right after downloading all the of the application updates that piled up since my last backup. Initially I always thought that one of the application being updated was the problem (thus the adding of them one by one!) but in that moment I also realized that my Playstore app on the backup was the older version and would get updated when I made my first download. The problem must be with either The Play Store or Google Play Services! I used my trusty Rom Toolbox to go check the latest update for play services and, sure enough, play services had been updated maybe 5-10 minutes prior to the problem, probably receiving the prompt when I first tried to download something, or in the original cases, when I started the updates!

[B][U]The Solution![/U][/B]

I froze Google Play Services as a test and low and behold, no pop up for over two days! But Google Play services is so engrained in our phones that suddenly my playstore didn't work, maps was acting wonky, and Google Now wasn't playing nice anymore. So I went back to Rom Toolbox and defrosted Play Service but turned off all location based intents, receivers, and services. Since then I'm almost 1 day error free and haven't seen any adverse effects in maps or navigation resulting in the disabled receivers, intents, or services. The answer seems to have something to do with Google Now's Location services which are constantly pinging your location. I haven't seen this fix recommended anywhere (and I've checked!) so hopefully this helps some of you out. I'd love to hear back about your results one way or the other.

Unfortunately for those of you who are not rooted, this fix does require root access and an root application manager that can manipulate receivers and intents. If you are not rooted you can try deleting the data from play services and removing updates. It may help temporarily but you may end up needing to do it regularly. You can also just disable play services all together if you can do with Google Apps.

I had the same exact problem and after doing a factory reset and even getting a new sim card, I played around with the sim card slot and it seemed a little loose to me. I took it to T-mobile and the rep said that even a little wiggle room can cause a faulty connection. I got a replacement phone and I'm better off for it. HOPE YOU HAVE INSURANCE :)

I was getting the same random "Unable to detect you SIM card. Your device will restart to check for SIM card." error within 2 hours of restarting. A factory data reset & new SIM card did not correct the error. Finally I read a post to remove the Amazon App and error went away. Too bad Amazon is one of my favorite apps.

Fab! Just turned off my location services on my S4 and my sim was immediately recognised! I hate a new S4 on its way as I made a claim but this doesn't impress me

I removed my amazon app and restarted my phone as suggested and it worked. I wasn't expecting this to work and I don't know if it was a coincidence or not but it did in fact work.

Restore the s4 phone to factory setting,it will fix it. Note you loss all your information stored on the phone!

samsung cheapest most fragile phone with android and 3rd party apps...rubbish

Nokia best phone on the planet

now be american

almost bullet proof

before any of them exist

thir was nokia

6 inch display

20mp camera quality

ck it out

i deleted all the amazon apps on my samsung and restarted it and so far so good its working.....if changes i will repost