In this guide, we will show you the steps to fix the issue of being unable to make VoLTE calls on unlocked AT&T devices. Slowly but surely the world is moving towards 5G. Let alone the flagships, even the budget devices are now 5G compatibility. However, it would still take some time before the countries start creating 5G spectrum and broadband. In this regard, the US has done a pretty decent job and many of its devices are enjoying the full capabilities that a 5G network has to offer. The ones that are yet to get the taste of this new network are at least having 4G on their devices.
There was only a minuscule proportion of users who were still stuck with 3G. Owning to economies of scale, cost incurred and other related factors, there wasn’t much for the carrier services to keep n supporting the 3G spectrum. Hence they gave those users a time period to jump over to 4G/5G before turning off the support of 3G. This was the case with AT&T as well, who finally decided to cut the call on 3G in the month of February this year. However, many users have voiced their concern that as soon as AT&T disabled 3G, they had to face the repercussions on their 4G devices as well.
According to them, they are no longer able to place or receive VoLTE/HD calls on their AT&T devices. They have also added that day the 3G connection was bid adieu was the exact day they started facing this issue, thereby signaling that disabling 3G might be the culprit. While we can’t find any official documentation that could justify that reasoning, we could make you aware of a nifty method that could help you fix the issue of being unable to make VoLTE calls on unlocked AT&T devices. Follow along,
Check Support for VoLTE on Unlocked AT&T Devices
- First and foremost, refer to this official document that lists out all the supported Unlocked AT&T devices.
- If your device is present there, then check out if it actually supports VoLTE/HD/Wi-Fi Calling. or just HD Calling.
- For example, while the Galaxy S22 + (SM-S906U) is present in that list, however, it only supports HD Calling and not VoLTE.
- So if that is the case with your device as well, then refer to the below-mentioned workaround and see if it spells out success for you or not.
Fix Cannot Make VoLTE Calls in Unlocked AT&T Devices
- Head over to the Settings > Connections > Mobile Network on your device.
- Then go to Access Point Names and tap on the Add button situated at the top right.
- After that, type in the following values:
Name: ATT Phone APN: phone mmsc: http://mmsc.mobile.att.net mms: proxy proxy.mobile.att.net port: 80 mcc: 310 mnc: 280 apn type: default,mms,supl,fota,hipri apn protocol & roaming: ipv4/ipv6 mvno: type none
- Save it and then select it to make it active.
Check if it fixes the issue of being unable to make VoLTE calls on unlocked AT&T devices. As far as the official stance on this matter is concerned, the developers are aware of this issue, but they haven’t given out any ETA for the rollout of a fix. As and when that happens, we will update this guide accordingly. In the meantime, the aforementioned workarounds are your best bet.
- Change Network Mode or Disable 5G on Samsung AT&T and Verizon
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