Issue with cellular service

See these Apple articles below:

If you see No Service, Searching, or SOS on your iPhone or iPad

If you see No Service, Searching, or SOS on your iPhone or iPad - Apple Support

Manually update your carrier settings on your iPhone or iPad

Manually update your carrier settings on your iPhone or iPad - Apple Support

Update your network provider settings manually on your iPhone or iPad

Update your network provider settings manually on your iPhone or iPad – Apple Support (UK)

If you see a Cellular, Ultra Wideband, or Apple Pay Issue message after an iOS update or restart

If you see a Cellular, Ultra Wideband, or Apple Pay Issue message after an iOS update or restart - Apple Support

adiiiii_1Qqqq Said:

"Issue with cellular service: Unfortunately I’ve tried swapping the sim and Same issue exists"

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Get this Serviced:

Seems to be a hardware issue. So, how old is this iPhone? Is it covered under warranty? You have a one-year, out-of-the-box, limmited-warranty with this.

To Set Up a Genius Bar Appointment:

Set up a Genius Bar Appointment (GBA) at your local Apple Store.

1. Siart here: Genius Bar Reservation and Apple Support Options - Apple
2. Scroll down to the Bottom of the page
3. Click the Get hardware help button
4. Proceed from there as necessary.

What to Bring:

Important: Bring some notes, your original proof of purchase, and create a backup prior to bringing it in. Though not required, bring the power adapter along, in case theirs does not work.  See More here: Get your iPhone, iPad, or iPod touch Ready for Service - Apple Support

adiiiii_1Qqqq Said:

"Issue with cellular service: Hello everyone I recently started having this issue where it says no service.I have pretty much tried everything airplane mode reset and everything in between however no luck on finding a solution. I’m wondering if anyone had similar issue of this sort"

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Contact your Carrier:

You Carrier provides you with these services. So, contact them about troubleshooting this. It may be a misconfiguration in the SIM card. So, you many need to have them, give you a new card to be entered into your iPhone.