topic Re: SIM not working. in Get Support

SIM not working.

malik121 — Sun, 17 Aug 2025 09:30:02 GMT

Hi,

I have been using Public Mobile since 2019 and have never replaced my SIM or faced any issues. However, over the last couple of months, SIM incoming/outgoing stopped working. I managed calls with VOIP, but now my cell does not show any SIM, though I changed slots with the other SIM and tried all phone settings; nothing really worked. I guess there is an issue with the SIM, and I need to change it due to recent changes made by the service provider.

Moreover, I need to know about e-sim and how it works. Please suggest! @members

Re: SIM not working.

computergeek541 — Sun, 17 Aug 2025 09:42:19 GMT

@malik121 wrote:
I have been using Public Mobile since 2019 and have never replaced my SIM or faced any issues. However, over the last couple of months, SIM incoming/outgoing stopped working. I managed calls with VOIP, but now my cell does not show any SIM, though I changed slots with the other SIM and tried all phone settings; nothing really worked. I guess there is an issue with the SIM, and I need to change it due to recent changes made by the service provider.

Public Mobile has not made any changes that require anyone to change to a new SIM card. While there have been changes to the network, this has to with less of the 3G network being available. Do you know if your phone can do VoLTE?

Re: SIM not working.

malik121 — Sun, 17 Aug 2025 10:08:57 GMT

Thank you so much. The issue is partially resolved; the SIM is recognized, I receive SMS, and 4G data works fine; however, I am unable to make or receive incoming/outgoing calls. Your quick help is highly appreciated.

Re: SIM not working.

softech — Sun, 17 Aug 2025 13:19:57 GMT

@malik121

What phone do you have?

If your phone is not on PM's VoLTE whitelist ( https://www.publicmobile.ca/en/on/get-help/articles/volte ) , then it will be using 3G for voice and it might be affected by this:

Telus is currently refarming the 850MHz band 5 spectrum and hence you are left with 1900MHz for voice calls.
https://www.publicmobile.ca/en/get-help/articles/850-turndown

While one compatible band is still sufficient, reality is 1900 MHz could have less coverage, depending on your proximity to a tower and hence you are seeing a poor or no coverage with voice (Data is not impacted as your phone has the compatible bands on 4G/5G)

If this is really what affecting your voice calls, there is really nothing much you can do other than getting a phone that is on PM's own VoLTE whitelist.

Re: SIM not working.

BKNS27 — Sun, 17 Aug 2025 13:24:42 GMT

@malik121

Did you check with your IMEI to see if your phone is compatible with VoLTE on the bottom of the link?

https://www.publicmobile.ca/en/on/get-help/articles/volte?_gl=1*1qks5fo*_gcl_aw*R0NMLjE3MzA4MTg5ODguQ2owS0NRaUFfcUc1QmhEVEFSSXNBQTBVSFNMOEoxTTZvTlpxSGFSd0h1RlBUa2owM3pfUldrc1R2b09wVk0yNTR6cjVuMmszeWdFSlctOGFBa2JDRUFMd193Y0I.*_gcl_dc*R0NMLjE3MzA4MTg5ODguQ2owS0NRaUFfcUc1QmhEVEFSSXNBQTBVSFNMOEoxTTZvTlpxSGFSd0h1RlBUa2owM3pfUldrc1R2b09wVk0yNTR6cjVuMmszeWdFSlctOGFBa2JDRUFMd193Y0I.*_gcl_au*OTI1ODcxOTYyLjE3MjU3NTU1OTk.*_ga*MTU1NjA2MTA5NS4xNjY5NzgwMTAy*_ga_5Q4XYYJ879*MTczMzQ2NjU5MC44LjEuMTczMzQ2NjYwMC41MC4wLjA.

It might not be the SIM but your phone. eSIM is basically an electronic SIM built into the phone but it is no as transferable as the SIM. You need to purchase another eSIM if you want to transfer eSIM between phones. But with a SIM, you just pop it out and put It into the new phone.

Re: SIM not working.

Gus65 — Fri, 19 Dec 2025 07:03:17 GMT

6s Plus

Re: SIM not working.

computergeek541 — Fri, 19 Dec 2025 07:09:04 GMT

@Gus65 wrote:
6s Plus

Are you having service issues? If it's an iPhone 6s Plus that you have, you're going to want to get a newer device due to likely network compatibility constraints that could experienced using this device at Public Mobile.

Re: SIM not working.

saleemt343 — Mon, 30 Mar 2026 16:58:49 GMT

It definitely sounds like the core problem now is voice support on newer network settings rather than the SIM itself, especially if SMS and 4G data are fine. Checking the VoLTE whitelist and your exact model is key here, since older iPhones like the 6s Plus can run into hard limits once 3G gets refarmed. On a related note, I was reading a breakdown of how globe telecome in the Philippines handled their own network upgrades: they added around 495 new cell towers by early 2026 and now get about 88% of their telecom revenue from data services. That same write‑up showed how over 63 million mobile subscribers and more than 2 million fiber users had to adapt to similar VoLTE and spectrum changes, which is why phones not on the official VoLTE list eventually struggle with calls even though data still works smoothly.