| ... | ... | @@ -307,7 +307,7 @@ Passes T-mobile's IMEI [compatibility](https://forums.puri.sm/t/us-carriers-imei |
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OK<br>(slow)
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</td>
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<td>SIM already activated in another phone; using APN `telstra.internet`</td>
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<td>SIM already activated in another phone; using APN \`telstra.internet\`</td>
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<td>
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[irvinewade](https://forums.puri.sm/t/myl5-australia-new-zealand/11526/71)
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| ... | ... | @@ -328,7 +328,7 @@ OK<br>(slow) |
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<td>???</td>
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<td>Yes</td>
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<td>Yes</td>
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<td>SIM already activated in another phone; using `live.vodafone.com`</td>
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<td>SIM already activated in another phone; using \`live.vodafone.com\`</td>
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<td>
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[irvinewade](https://forums.puri.sm/t/myl5-australia-new-zealand/11526/26)
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| ... | ... | @@ -370,7 +370,7 @@ OK<br>(slow) |
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<td>???</td>
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<td>Yes</td>
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<td>Yes</td>
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<td>Postpad account; temporarily changes from 4G to 3G during calls.*</td>
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<td>Postpad account; temporarily changes from 4G to 3G during calls.\*</td>
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<td>spacesurfer</td>
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</tr>
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<tr>
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| ... | ... | @@ -492,7 +492,7 @@ OK<br>(slow) |
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<td>???</td>
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<td>Yes</td>
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<td>Yes</td>
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<td>Drops to 2G during phone calls, cutting all internet access.*</td>
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<td>Drops to 2G during phone calls, cutting all internet access.\*</td>
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<td>
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[lipu](https://forums.puri.sm/t/questions-about-dogwood-and-phone-calls/10156/18)
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| ... | ... | @@ -513,47 +513,62 @@ OK<br>(slow) |
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<td>???</td>
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<td>Yes</td>
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<td>Yes</td>
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<td>Using a prepaid SIM card; temporarily changes from 4G to 3G during calls.*</td>
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<td>Using a prepaid SIM card; temporarily changes from 4G to 3G during calls.\*</td>
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<td>
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[skalman](https://forums.puri.sm/t/troubleshooting-phonecall-problem-on-librem-5-birch/9989/30)
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</td>
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</tr>
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<tr>
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<td>UK</td>
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<td>iD Mobile</td>
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<td>Same as Three UK</td>
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<td>
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**GSM:** No<br>**UMTS/HSPA+:** 2100 (B1)<br>**LTE:** 800 (B20), 1800 (B3), ~~1400~~, ~~3400~~ [source](https://www.4g.co.uk/4g-frequencies-uk-need-know/)
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</td>
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<td>BM818‑E1</td>
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<td>Yes</td>
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<td>Yes<sup>2</sup> </td>
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<td>
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Yes<sup>2</sup>
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</td>
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<td>Yes</td>
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<td>Yes</td>
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<td>Data, SMS and 3G calls all work flawlessly.<sup>2</sup> MMS is a work in progress. After inputting the carrier’s settings, I can currently receive MMS messages fairly reliably, but I can not reliably send MMS messages.
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<td>
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Data, SMS and 3G calls all work flawlessly.<sup>2</sup> MMS is a work in progress. After inputting the carrier’s settings, I can currently receive MMS messages fairly reliably, but I can not reliably send MMS messages.
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</td>
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<td>
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[patch](https://forums.puri.sm/t/uk-mobile-telephone-network-that-works-well-with-librem-5/18137/3)
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</td>
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</tr>
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<tr>
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<td>UK</td>
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<td>Three</td>
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<td>
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**GSM:** No<br>**UMTS/HSPA+:** 2100 (B1)<br>**LTE:** 800 (B20), 1800 (B3), ~~1400~~, ~~3400~~ [source](https://www.4g.co.uk/4g-frequencies-uk-need-know/)
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</td>
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<td>ditto</td>
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<td>BM818‑E1</td>
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<td>Yes</td>
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<td>Yes<sup>3</sup></td>
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<td>
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Yes<sup>3</sup>
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</td>
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<td>Yes</td>
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<td>Yes</td>
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<td>Data, SMS and 3G calls all work flawlessly.<sup>3</sup> MMS not tested with latest software but probably the same as ID mobile as they appear to use the same underlying MMSC.
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<td>
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Data, SMS and 3G calls all work flawlessly.<sup>3</sup> MMS not tested with latest software but probably the same as ID mobile as they appear to use the same underlying MMSC.
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</td>
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<td>[patch](https://forums.puri.sm/t/uk-mobile-telephone-network-that-works-well-with-librem-5/18137/3)</td>
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</tr>
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<td>
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[patch](https://forums.puri.sm/t/uk-mobile-telephone-network-that-works-well-with-librem-5/18137/3)
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</td>
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</tr>
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<tr>
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<td>Interna<br>tional</td>
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<td>
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Interna<br>tional
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</td>
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<td>
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[Surfroam](https://surfroam.com/)
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| ... | ... | @@ -571,7 +586,10 @@ OK<br>(slow) |
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</td>
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</tr>
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<tr>
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<td>Interna<br>tional</td>
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<td>
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Interna<br>tional
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</td>
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<td>
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[Truphone](https://www.truphone.com/us/)
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| ... | ... | @@ -599,8 +617,8 @@ OK<br>(slow) |
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</tr>
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</table>
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n/t = Not Tested.
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~~B_X\_~~ = Cellular bands with ~~strikethrough~~ are not supported by the installed cellular modem.
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n/t = Not Tested.\
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~~B_X\_~~ = Cellular bands with ~~strikethrough~~ are not supported by the installed cellular modem.\
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† Data needs to be enabled by going to **Settings > Mobile > Mobile Data**.
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\* Purism developer Sebastian Krsyszkowiak [says](https://forums.puri.sm/t/questions-about-dogwood-and-phone-calls/10156/23) this is caused because the Librem 5 doesn't support VoLTE:
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| ... | ... | @@ -609,9 +627,11 @@ n/t = Not Tested. |
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The BM818 has VoLTE support but it is not enabled by default. This is still a work in progress.
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<sup>2</sup> UK iD Mobile: The operator’s name appears as "i" instead of iD on the Librem 5, but does not seem to affect operation.<br>I have VoLTE enabled all the time, and it works fine for me almost all the time. This has remained consistently the case, except that, one year ago, I discovered at least one specific geographic location where the phone would not ring for incoming calls when using VoLTE, making it seem like I was ignoring calls and breaking outgoing calls. I had to switch to 3G in that location. [forum post] It’s possible the experience may have improved since then, as I haven’t tried making or taking a call in that location recently. VoLTE still works fine in the places where I normally use it.
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<sup>2</sup> UK iD Mobile: The operator’s name appears as "i" instead of iD on the Librem 5, but does not seem to affect operation.\
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I have VoLTE enabled all the time, and it works fine for me almost all the time. This has remained consistently the case, except that, one year ago, I discovered at least one specific geographic location where the phone would not ring for incoming calls when using VoLTE, making it seem like I was ignoring calls and breaking outgoing calls. I had to switch to 3G in that location. \[forum post\] It’s possible the experience may have improved since then, as I haven’t tried making or taking a call in that location recently. VoLTE still works fine in the places where I normally use it.
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<sup>3</sup> UK Three: I had VoLTE enabled all the time and found it worked fine for me, but see note about VoLTE on ID Mobile, which might also apply to Three as it’s the same physical network (not tested).<br>In practice, according to Cellmapper.net, almost all _Three_ cell sites seem to operate on bands 3, 1 and 20, with 3 the most common, followed by 1, and 20 the least common. Where other bands are used, they seem to be in addition to these main bands, so modem compatibility is a non-issue.
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<sup>3</sup> UK Three: I had VoLTE enabled all the time and found it worked fine for me, but see note about VoLTE on ID Mobile, which might also apply to Three as it’s the same physical network (not tested).\
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In practice, according to Cellmapper.net, almost all _Three_ cell sites seem to operate on bands 3, 1 and 20, with 3 the most common, followed by 1, and 20 the least common. Where other bands are used, they seem to be in addition to these main bands, so modem compatibility is a non-issue.
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