Skip to content 
If you are experiencing the Metro PCS error REG90 then dont panic, we have the solution for you, follow this quick fix guide
Ever since MetroPCS and T-Mobile joined forces, customers have been able to enjoy solid connections and affordable prices. Metro runs on the state-of-the-art T-Mobile network.
This means more and better coverage than before. Metro by T-Mobile is the real deal, especially for those who want to save money or get remarkable features like WiFi calling and hotspots.
But over the last few months, Metro customers have been reporting problems with the service and its WiFi calling feature. Most of them are unhappy about being unable to make calls over WiFi. That said, the bothersome issue here is the Metro PCS WiFi calling error REG90.
It is a rather annoying problem that causes the phone unable to connect to the WiFi network. This is not what most of us want to encounter especially when we require calling someone.
We will show you how to fix the MetroPCS WiFi calling error REG90 so that you can get back on track and enjoy your service as usual.
Table of Contents
What does the Error REG90 mean?
REG90 is an error code that indicates an issue with the WiFi connection on your phone. The error code usually appears when you try to make a call or send a text over your WiFi network but it doesnโt work out as expected.
Not all phones are affected by this problem. Itโs only those whose Operating System (OS) is Android 4.0 or later and has been upgraded.
Some of the Metro users report getting this error message after swapping their T-Mobile SIM cards for one of the new advanced ones. In this case, the error may be triggered by the new SIM card itself.
How to fix the Metro WiFi calling error REG90?
WiFi calling typically involves connecting to a wireless network so that you can make or receive calls over the Internet.
With this issue, however, the phone is unable to do so. All you get is an error message that readsโ REG90 โ Unable to connectโ. Use the no-nonsense tips below to resolve this exasperating error code.
1. Check whether WiFi calling is enabled
Perhaps the sensible reason why this feature isnโt working on your phone is that it is turned off. For that reason, you will have to check whether WiFi calling is enabled or not. To do so, access the Settings on your phone and open the Wireless & Networks section.
Tap the WiFi option to get a list of available wireless networks. If you see an entry for T-Mobile, then you are good to go. If not, then itโs time to turn WiFi calling on. Make sure that the feature is enabled by toggling it on.
2. Restart your phone
While itโs quite a simple fix, itโs worth trying and thatโs why we recommend restarting your phone. Simply doing so will help clear the phoneโs memory and prevent any other issues from causing the same problem.
In addition, it will clear out any leftover data from the previous session and allow it to perform as intended. Just make sure that you do it safely and correctly to prevent any possible damage to your phone.
3. Check for software updates
The error REG90 is caused by many factors including an outdated software update or even a bad one. In this case, we recommend checking for updates on your phone.
To do so:
- Tap Settings
- Go to About phone
- Perform a Software update
- Get a list of available updates.
If an update is available, then you can install it to make sure the phone is up to date and that there are no other issues at hand.
4. Remove and reinsert the SIM card
This is the most straightforward solution for this error. Simply remove and reinsert the SIM card to make sure that itโs inserted properly and that the pins are aligned correctly. You may also want to try a different SIM card in case the one that you are using has an issue of its own.
If you suspect a faulty SIM card is to blame, then you can always replace it. Go to any T-Mobile store and theyโll get you a new, functional SIM card.
5. Confirm your phone supports WiFi calling
Some phones are not designed to work with WiFi calling and so this feature wonโt work on them. In such cases, you will have to confirm first that your phone supports WiFi calling.
To do so, open the Settings app and tap the More button at the bottom left corner. Scroll down until you see WiFi calling and tap it. The screen will show you whether or not your phone is compatible with WiFi calling as well as which networks it can work with.
6. Call T-Mobile support
Itโs not uncommon for a phone to have issues with WiFi calling and it may require certain actions to fix it. In such cases, the best thing to do is to call T-Mobile and request help. They will be able to walk you through all the steps required and get your phone working properly again.
For this particular issue, the customer support rep will ask you to power down your phone or restart it completely. Theyโll then send an OTA update and from there, your phone should be fine. The WiFi feature will start working seamlessly.
Conclusion
WiFi calling is a great feature that allows you to make calls over WiFi networks. However, it can sometimes fail due to many reasons and this is when the error REG90 pops up. This error will prevent you from using the WiFi feature and so itโs best to fix it as soon as possible.
Follow the steps listed above and your WiFi calling should work again without any issues.
FAQs
Why am I having issues with WiFi calling?
There are a lot of scenarios where WiFi calling can fail. The most common one is when youโre trying to call someone and your phone doesnโt detect their network. This might occur if youโre in an area with poor reception.
What does REG90 mean?
REG90 means โRegistration Failedโ and itโs a message that pops up on your phone when you try to use WiFi calling.
