Q: i updated my iphone 5s to ios 8.0.2 directly to 8.0.2 and started getting a mssg that "no sim card installed" how do i sort out the issue pls advise

Hello there ddhirajthareja,

It sounds like you are getting a No SIM message after updating to iOS 8.0.2. I would use the troubleshooting in the following article to help you get that issue resolved:

If you see 'No SIM' alert on iPhone

1. Update your iPhone to the latest version of iOS.
2. Turn airplane mode on and then off again.
3. Restart your iPhone.
4. Check for a carrier settings update. Go to Settings > General > About. Install any available update.
5. Remove the SIM card and make sure that it's a valid SIM that your carrier provided. Also make sure that it's not damaged, worn, or modified. Then reinsert it.
   A SIM tray that comes with one iPhone model won't necessarily work with a different iPhone model. When you insert the correct SIM tray, the SIM tray should be flush with the device.
6. If you have another SIM card, insert it. You can use a SIM card from any phone with the same format as your iPhone SIM card. If your iPhone works with that SIM card, contact the carrier that issued your original SIM card.
7. Restore the iPhone.

 

If you still see the issue, contact Apple support.

Thank you for using Apple Support Communities.

Take care,

Sterling