Three model numbers believed to belong to an unannounced Sony smartphone have appeared in the GSMA IMEI database. The codes are XQ-HH44, XQ-HH54 and XQ-HH74, all of which follow the naming pattern Sony uses for the Xperia 1 series. The entries were registered in early August 2026 and suggest that groundwork for the next flagship, the Xperia 1 IX, is already underway. The unit believed to be destined for Japan also carries a note about satellite connectivity.

Three codes, three regions

The database lists XQ-HH44, XQ-HH54 and XQ-HH74. Sony has long prepared separate model numbers for the Xperia 1 line covering Japan, Europe and the rest of the world, and this generation appears to follow the same split. XQ-HH44 is expected to cover Japan, XQ-HH54 Europe, and XQ-HH74 other markets including Greater China.

Each entry is paired with an internal development code. XQ-HH44 is listed as PM-1545-BV, XQ-HH54 as PM-1540-BV, and XQ-HH74 as PM-1541-BV. Codes beginning with PM are the identifiers Sony uses during development, and they often show up in certification filings and databases before anything official is said.

What the letter H tells us

Sony builds generation information into its model numbers. In XQ-HH44, the leading H is understood to mark a 2027 model year, which places these three devices in the generation that follows the current lineup. The Xperia 1 VIII is a 2026 model, so the next step in the sequence is the Xperia 1 IX.

The final digit is drawing attention as well. A trailing 4 is read as an indicator of eSIM support, and all three codes meet that condition. For the Japan-bound XQ-HH44 in particular, some observers expect Sony to drop the physical SIM tray entirely and go eSIM only. That remains an inference drawn from the numbering scheme, not something Sony has confirmed.

A satellite note that only the Japanese unit carries

One detail appears only on the Japanese entry: a reference to compatibility with 3GPP satellite communication standards. 3GPP is the body that defines mobile network specifications, and in recent years it has been building out standards that let handsets reach a satellite when no cell tower is within range. Compliance with those standards points to some form of satellite emergency messaging, the kind of feature usually marketed as satellite SOS.

In Japan, staying reachable during a disaster is a recurring concern, so seeing this note attached only to the domestic model is telling. That said, a compatibility flag in a database does not guarantee a shipping feature, and the actual scope of what works will not be clear until Sony makes an announcement.

An early filing does not mean an early launch

Looking at how previous entries were timed, the Xperia 1 VIII showed up in the same database in November 2025, and the Xperia 1 VII in October 2024. The Xperia 1 IX filing in August 2026 is therefore several months earlier than the usual pattern.

That head start does not necessarily translate into an earlier announcement. IMEI allocation can be pushed forward for regulatory or manufacturing reasons, and a filing date says nothing definite about a release window. Nothing has leaked yet about the chipset, cameras or battery capacity.

Even so, the filing carries weight given Sony's modest shipment volumes in the smartphone market. Talk of the company scaling back its handset business has come around repeatedly, and evidence that development on the premium Xperia 1 line is proceeding for another year pushes back against that narrative.

Pricing is one open question. Memory supply, DRAM in particular, remains tight, and rising component costs have been pushing smartphone prices up across the board. There is no guarantee that pressure will have eased by the time the Xperia 1 IX arrives.

Summary

The appearance of XQ-HH44, XQ-HH54 and XQ-HH74 in the IMEI database has brought Sony's next flagship, likely the Xperia 1 IX, into view. The numbering points to a 2027 model year and eSIM support, and the Japan-bound XQ-HH44 is listed as compatible with 3GPP satellite communication standards. No hardware specifications have surfaced yet, but the fact that the Xperia 1 series looks set to continue into another year is welcome news for users in Japan.