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Update carrier documentation

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flawedworld 2022-04-09 14:08:22 +01:00 committed by Daniel Micay
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<p>Please note that in some regions, LTE is referred to as 4G.</p>
<p>Generally Visual Voicemail, SMS, MMS, Calls and VoLTE will work fine on GrapheneOS
<p>Generally 5G, SMS, MMS, Calls and VoLTE will work fine on GrapheneOS
with officially supported carriers by Google. Wi-Fi calling may vary due to a reliance
on proprietary Google apps which GrapheneOS does not ship.</p>
<p>If you are having issues with Visual Voicemail, please be aware that AT&amp;T USA
users are unable to use this feature currently due to a lack of AOSP support. Other
carriers are done on a best effort basis. We would suggest using <a href="https://play.google.com/store/apps/details?id=com.google.android.dialer">Google Dialer</a>
with sandboxed Google Play if you are unable to get this feature working.</p>
<p>If you are having problems sending or receiving SMS/MMS messages, we suggest that
you perform the following steps:</p>
<ul>
<li>Deregister your phone number from <a href="https://selfsolve.apple.com/deregister-imessage">Apple iMessage</a></li>
<li>Deregister your phone number from <a href="https://messages.google.com/disable-chat">Google Chat Features</a></li>
<li>Deregister your phone number from your carrier's RCS service</li>
<li>Deregister your phone number from your carrier's RCS service (Not all carriers have this)</li>
</ul>
<p>If you continue to have problems despite following the instructions above or you
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try toggling it off. Your carrier may not properly support VoLTE.</li>
<li>As a last resort you may need to ask your carrier for a replacement SIM card.</li>
</ul>
<p>Some carriers may restrict functionality, such as VoLTE, on imported Pixel devices as they only
whitelist the IMEI ranges of Pixel device SKUs which were sold locally. You can check your
SKU on GrapheneOS by going to Settings ➔ About phone ➔ Model ➔ Hardware SKU and using the
<a href="https://support.google.com/pixelphone/answer/7158570">official Google documentation</a>. You should check if such functionality works on the stock OS to troubleshoot.
It is not possible to change the IMEI on a production device and GrapheneOS will never add
support for this.</p>
<p>GrapheneOS includes bypasses for carrier restrictions on APN editing, tethering via
USB, Ethernet, Bluetooth and Wi-Fi and the ability to disable 2G, actions which would not
have been possible on the stock operating system.</p>
necessarily have been possible on the stock operating system.</p>
</section>
</main>
<footer>