Sony Xperia 10 VIII FCC Filing Reveals 4 LTE Bands as 3.5mm Jack Returns

Q: Is Sony's choice to skip 5G a savvy cost-saving move or a major misstep for a 2026 phone?

It looks more like a major misstep than a smart savings play. By late 2026, 5G is no longer a premium extra; it is a baseline expectation even in midrange phones. The FCC filing for the Xperia 10 VIII shows only LTE bands 4, 5, 12 and 41, with no clear 5G support. That matters because carriers in the US have already shut down 2G and 3G, and are steadily shifting spectrum and investment toward 5G. An LTE-only phone can still work, but it is less future-proof and more vulnerable to roaming and voice-calling complications, especially if VoLTE interoperability is not flawless. The cost-saving argument is weak. 5G component costs have fallen sharply, and by 2026 most new smartphones across price tiers include it. Skipping 5G may trim Sony’s bill of materials, but probably not enough to outweigh the commercial downside of launching a phone that looks outdated on paper the day it arrives. There is a narrow case for Sony’s decision if the Xperia 10 VIII is aimed at a niche buyer who values Sony’s traditional hardware choices, such as the 3.5mm jack, and prioritizes price discipline over cutting-edge connectivity. Wi‑Fi 6 support also softens the blow for users who spend much of their time on wireless networks. Even so, in a market where 5G coverage is widespread and consumer expectations are set, omitting 5G risks making the Xperia 10 VIII feel behind the times before it even launches.

Q: With US 2G/3G networks gone, will Sony's new LTE-only phone be able to make reliable emergency calls?

Yes—but only if Sony and the US carrier fully support and provision VoLTE for that model. With AT&T and Verizon already having shut down 2G/3G, and T-Mobile’s remaining 2G network due to close in August, an LTE-only phone launching around September 2026 will have no legacy fallback for voice or 911 calls in the US. That means emergency calling will depend entirely on Voice over LTE. The FCC filing for the Xperia 10 VIII confirms LTE bands 4, 5, 12 and 41, but it does not confirm VoLTE certification, IMS configuration, or carrier approval. Those details matter more than the mere presence of LTE. In the US, some phones can attach to LTE for data yet still fail to place voice calls reliably if VoLTE is not enabled, not certified by the carrier, or not properly implemented for emergency calling. Emergency calling should work if the phone supports standards-compliant VoLTE emergency sessions, including E911 location handling, and if a US network accepts the device for IMS voice service. But reliability cannot be assumed from the FCC filing alone. The limited US band support and lack of any 5G mention also suggest this may be a niche or roaming-oriented device, which can complicate interoperability. So the practical answer is: probably yes on paper, but not guaranteed in real-world US use unless Sony explicitly confirms US VoLTE support and the relevant carrier certifies the handset for voice and emergency services.

3 articles · Updated · Android Authority · Jul 17

FCC documents for Sony’s Xperia 10 VIII show support for LTE bands 4, 5, 12 and 41, plus Wi-Fi 6 and a 3.5mm headphone jack.
The filing does not mention 5G, suggesting U.S. 5G roaming may be unavailable, and it lists Bluetooth support without specifying the version.
SAR images also indicate Sony may have shifted the NFC antenna closer to the handset’s edge, one of the few hardware clues in the certification.
The FCC appearance points to a launch drawing nearer; Sony unveiled the Xperia 10 VII on Sept. 12, 2025, and could follow a similar timetable this year.