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Released September 16, 2016. Model 1660, 1778 Available as GSM or CDMA / 32, 128 or 256 GB / Rose gold, gold, silver, black, and jet black.

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Caution Symbol next to "No Service"

I had a friend look at a phone that was stuck in a boot loop. The boot loop lasted for about 5 months? After he fixed it (he said all he did was mess with iTunes until it finally started), there was a Caution triangle to the left of the “No Service” in the left. I figured if I restored the phone, it would all be peachy. Nope. Now the phone is stuck on the “Hello” screen because soon after it goes “Unable to Activate": An update is required to activate your iPhone.” No idea where to go from here. Do I keep restoring until I catch a lucky break?

Answer this question I have this problem too

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Hello, I currently have this issue on my iPhone 7. It has been working until a couple days ago I went hiking and did not have reception. After that, I never go signal again. The warning sign appear, and I tried everything I could. Upgraded and downgraded hoping to fix it, but nothing worked. Were you able to fix your iPhone 7?

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No service will most likely be baseband issues.

I had a similar situation with a 7 that had shorted baseband CPU.

Causing phone to have no reception.

This will also cause the phone not to restore correctly.

Your phone will need board level work to be repaired and suggest looking for a micro solderer.

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The antenna may have become dislodged.

While sitting down, turn your phone screen facing down in a horizontal position across your upper leg.

Firmly rock it left-to-right across your upper leg for about 5-10 secs. (Be careful not to do it so hard that you bend your phone).

Switch your phone to Flight Mode and back again to reinitialise the network search.

Repeat if necessary.

This should re-seat the antenna and restore network connectivity.

I had exhausted all other software options, and this is the only thing that actually worked for me! I've been doing this for a few weeks now and it consistently restores service to my iPhone 6. I still lose network every few days (sometimes multiple times in a single day), but this method restores it every time.

Best of luck.

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That is Baseband related issues.That is mostly shown in iPhone 7 and 7 Plus too.That is Cronic problem in that series.Apple have to look for that issues.Million of iPhone 7 and 7 plus going to die day by day.

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