I’m aware that the device does not sell in the US, but I was wondering about broadband connectivity. Would 5g or any type of internet connectivity work if the phone were to be used in the US or not?
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Hi, there are written supported bands on this page Jolla Phone (Sep 2026) – Jolla Shop so please check with your cellular network provider.
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Not a technical advise, yet I would assume that any phone sold today is built with capabilities that allow people travel to various parts of the world, otherwise it would not make sense.
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From ChatGPT:
The Jolla Phone supports most of the important US 4G and 5G bands, so it will work great with main carriers in cities and suburbs. Just a heads up: it doesn’t include band 13 (used by Verizon) or n71 (used for T-Mobile’s rural 5G), so coverage might be less strong in some remote areas. For everyday use in urban locations, you’ll have excellent compatibility.
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Another tip is to compare the supported frequencies with those of other well-known phones, such as: Compare Jolla Phone vs. Apple iPhone 17 vs. Samsung Galaxy S26 - GSMArena.com
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Please don’t waste precious ressources to ask a stupid bot with often incorrect answers.
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If you intend to use the J2 with a US carrier you can count out Verizon (no CDMA) and probably AT&T (you’d have to use some kind of force majeure to get them to whitelist it) so the only possibility is the somewhat more BYOD-friendly T-Mobile (and T-Mo network resellers). So that’s the place to look for overlapping supported 4G and 5G bands. For voice purposes, 5G won’t help, since I haven’t seen any indication that Jolla is working on or even looking into VoNR . . .
Also note that T-Mo USA is suggesting that they’re phasing out 4G over the next several years. They’re kinda vague about exactly when, but they also did ax 2G and 3G, so they’re not kidding either. And this time, I don’t think they’ve got a bunch of legacy IOT kinda devices to keep pushing out deadlines repeatedly.
Probably not unless there was a base Android image that could have been used to certify it with the GSM-T network. This is is the main reason it’s been very easy to get the Xperia 1/5 IV working woth T-Mobile, ATT and MVNO on their networks- there’s a precertified radio configuration for those devices. It’s not impossible. But it is improbable. As others have noted, 2G and 3G are largely discontinued (especially near and in metropolitan areas) to repurpose bands. In rural and semi rural you could almost certainly use the J2 on the T-Mobile 2.5G network, but it’s very spotty and extremely slow. In many cases far to slow to use for any purpose other than low quality calls. If you want SFOs in the USA the Xperia 5 IV works fantastically. Far better than anything else. Also be aware that phones like the Pine Phone and Pine Phone Pro may also work for a short time until they ban your device. Unfortunately too many people turned those devices into unlimited data access points. Newly registered Pine devices on either T-Mobile or ATT will see the IMEI and ICCID banned almost immediately. On ATT you’ll also forfeit your MSISDN permanently. Like others noted, Verizon is a brick wall- don’t even bother trying. The Verizon network sucks anyway. 
Well my X10 III roams with no problems in US and Canada. I’m with Vodafone in AUS
At risk of hijacking the thread, I am after similar answers regarding Jolla’s future plans to officially support US telecom operators. So far I’ve only seen “considering dedicated US launch” some time “later,” which I imagine would involve FCC certification and expensive testing to get their IMEIs put on a whitelist.
I am a batch 3 purchaser, but in light of my experience over the last few days I am strongly considering canceling the order. I bricked my previous phone earlier this year and have been using my old Lumia 950 as a daily driver since. Its band support for T-Mobile is good, but the device is not VoLTE compliant, meaning I’ve been locked out of the 4G network. T-Mobile kindly shut down my local 2G tower a week ago, leaving me with nothing.
This week I was able to get my hands on both a Nokia 110 4G (2024) and a Kyocera DuraXE 4710B. Tried both on my US Mobile Light Speed (T-Mobile) plan. The Nokia recognized the network but failed calls at the VoLTE handshake and rejected inbound/outbound SMS. The Kyocera would not even recognize the network. Switched to Dark Star (AT&T) since it’s a Bell (Canada) SKU and got signal and even data/SMS, but calls failed again without VoLTE.
Needless to say it’s been a long time since I’ve been in the market for a phone. It’s gotten a lot more difficult, and I’m a little surprised and very disappointed the situation is this bad and I had to burn so many hours trying to understand what went wrong. Also that T-Mobile’s network policy is now stricter than AT&T’s.
I would love for Jolla to succeed with this phone as much as I would love to be a part of that success, but unless someone has some critical info I don’t know/understand, I have to urge prospective American buyers to abstain for now.
I think FCC certification might be the least of the issue, but stuff like logistic and especially American patents which might be their biggest issue which why they have avoided that market
Also if Jolla would ever want to have payment system to their store, expanding (officially) to other markets would just be huge bureaucratic headache for such a small corpo….even more so in these “peaceful geopolitical times” 
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If you want SFOS in the USA the Xperia 5 IV works
I thought that it was impossible to unlock the bootloader on the model with US bands, thereby rendering SFOS unuseable. Is there a workaround for this bit of tyranny that I’ve missed?