r/SonyXperia • u/oogoom • 16h ago
Xperia 1 VIII Xperia 1 VIII in the United States - Ultimate Guide
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Been seeing a lot of questions about using an Xperia in the US, especially the Xperia 1 VIII (referred to as 1m8 below) that was recently released. I figured it would be good to set up a single reddit to consolidate all information as much as possible. To get some form of consistency, I would like to ask the following:
- If you do not have a 1m8 in hand yet and simply want to ask questions, please review all the posts to ensure your question has not already been asked and/or answered before posting your question.
- If you have a 1m8 in hand and have a question, please review all posts to ensure your question has not already been asked and/or answered before posting your question. Also, please provide your regional variant model number and firmware version so that others with same specs can know what to expect.
- If you have a 1m8 in hand and simply want to share your experiences, please provide your regional variant model number and firmware version to help others with the same model and firmware.
Many questions deal with whether or a 1m8 will work in the US. The short answer is YES but it comes with caveats.
PROVIDERS
- T-Mobile - Probably the best choice. Works out of the box but requires a pre-authorized SIM. You cannot activate a new SIM using the 1m8. It must be activated on an authorized device first.
- AT&T - Will work with an authorized SIM. You may even be able to activate it with the 1m8. But there may come a time when you will be blocked/kicked off because the 1m8 is technically an unauthorized device and AT&T uses a whitelisted device system. That being said, you may be able to get away with it (see below: https://www.reddit.com/r/SonyXperia/comments/1v3ss99/comment/oz5o0vb/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button), but be warned that it's possible to be blocked/kicked off.
- Verizon - same as AT&T.
- The above applies to their respective MVNOs.
SPECS
- Japan Version (XQ-GE44): https://www.sony.jp/xperia/spec/simfree.html#xperia1m8
- UK/European Version (XQ-GE54): https://www.sony.co.uk/smartphones/products/xperia-1m8/spec?sku=xqge54b.gc
- HK/Global Version (XQ-GE74): https://www.sony.com.hk/en/electronics/support/mobile-phones-tablets-mobile-phones/xperia-1-viii-256gb/specifications?srsltid=AfmBOoqj4wzdo1qyY2zisAY0UMwoF2QcsQl0u3lCOtPYadL1_wr7pK23
- Only Japan sells the 16/512GB and 16/1TB versions in all colors.
- Europe and Global/HK versions have 12GB ram models in all colors and the 16GB/1TB in gold only.
WILL 5G WORK?
- No 5G out of the box.
- Can be enabled by unlocking the bootloader and root access, which will essentially factory reset the phone. WARNING: THIS PROCESS CAN BRICK YOUR PHONE IF YOU MESS UP. It should only be done if you are confident in your abilities. If not, it's probably best you did not get this phone.
- Tap to pay and some banking/financial apps will require you to lock the bootloader again or they won't work.
- XDA Guide here: https://xdaforums.com/t/unlock-bootloader-and-root-guide-xperia-1-viii-xq-ge74.4790389/ and https://xdaforums.com/t/enable-5g-global-rf-bands-on-xperia-5g-lte-ca.4753150/ . A consolidated guide can also be found here: https://xdaforums.com/t/new-us-user.4792130/post-90655305
- Potentially can be disabled again by a future software update.
- Even if enabled, 5G will likely only work near large cities and well populated areas because NONE of the variants support T-mobile's extended 5G band N71. Check your coverage maps.
MOBILE COVERAGE
- Use this website to view your tower and band coverage for your area and provider. https://www.cellmapper.net/
- As noted above, T-mobile is probably the best US provider for using an Xperia. T-mobile is in the process of migrating their 4G LTE bands to 5G to be completed by 2028 (https://www.tmonews.com/2025/10/t-mobile-to-start-phasing-out-4g-lte-network-by-2026/). As noted, T-mobile's extended 5G is N71, which is NOT supported by any of the variants. 1m8 will work on LTE for a year or so until the majority of bands are migrated. Then, you may be forced to enable 5G as noted above
- T-mobile 5G uses N2, N41, N77 (some markets, check cellmapper)
- Potential future bands: N5, N66
- HK/Global: N5, N41, N77
- UK/European version supports: N5, N41, N77
- Japanese version supports: N5, N41, N66, N77
- AT&T 5G uses: N2, N5, N66, and N77
- HK/Global version supports: N5, N77
- UK/European version supports: N5, N77
- Japanese version supports: N5, N66, N77
- Verizon 5G uses: N2, N5, N66, and N77
- HK/Global version supports: N5, N77
- UK/European version supports: N5, N77
- Japanese version supports: N5, N66, N77
WIFI
- Global/HK version (XQ-GE74) is geofenced for 6 Ghz WiFi.
- UK/Europe version (XQ-GE54) is geofenced for 6 Ghz WiFi.
- Japanese version (XQ-GE44) - TBD
- No known fixes yet. There is a fix for the 1m7 which may apply to the 1m8. However, no confirmations yet. Link will be provided here when confirmed.
CONFIRMED WORKING
- XQ-GE74 Variant has VoLTE and VoWiFi out of the box on Google Fi.
RECOMMENDATION
- YES if you are ok with the caveats above.
- NO if you are not.
CREDITS
- u/KindStrangerofGold - for wifi information and Google Fi confirmation
- u/NoWitness79 - for wifi information
If you find any errors, let me know. I will edit the above with relevant information as needed.
