Sony Xperia 1 IX Leaks in 3 GSMA Listings as 2027 Flagship Development Emerges

Q: Does the early IMEI database leak of the Xperia 1 IX hint at a surprise early launch, or just routine testing for 2027?

It looks more like routine testing and regulatory preparation for a 2027 flagship than evidence of a surprise early launch. The main signal from the GSMA IMEI entries is that Sony has started formal development steps for the next Xperia 1 model. The codes fit Sony’s established naming pattern, and multiple reports interpret the “H” as pointing to a 2027 model year. That supports the idea that this is the Xperia 1 IX, with regional variants for Japan, Europe and other markets, and likely eSIM support. What weakens the early-launch theory is Sony’s recent history. The Xperia 1 VII reportedly appeared in the IMEI database in October 2024, and the Xperia 1 VIII in November 2025, yet both still followed Sony’s usual flagship timing around late spring or early summer. Even though the Xperia 1 IX seems to have surfaced a bit earlier, that alone is not strong evidence that Sony will move up its announcement. The more reasonable reading is that Sony is working further ahead this cycle, not necessarily changing its release calendar. IMEI registration is a normal part of testing, certification and market preparation, and it often happens months before launch. The leak is more important as confirmation that Sony is continuing the Xperia 1 line into 2027. The bigger practical issue may be price, not timing: several reports point to DRAM and memory cost pressure, which could push the Xperia 1 IX above the already premium pricing of recent Xperia flagships.

3 articles · Updated · Notebookcheck.net · Aug 9

Three Sony Xperia 1 IX model numbers have surfaced in the GSMA IMEI database, indicating Sony has already started work on its 2027 flagship just weeks after the Xperia 1 VIII launched in June.
S-Max identified XQ-H44 for Japan, XQ-HH54 for Europe and XQ-HH74 for other markets; the trailing 4 points to eSIM support, with the Japanese version reportedly eSIM-only.
The listings also include internal designations PM-1545-BV, PM-1540-BV and PM-1541-BV, following Sony’s usual Xperia 1 naming pattern and reinforcing that the devices are genuine regional variants.
The early database appearance does not necessarily signal an earlier release—Sony’s Xperia 1 VIII appeared in IMEI records in November 2025 and the Xperia 1 VII in October 2024.
The leak suggests Sony remains committed to the premium smartphone market, though a broader DRAM crunch could push Xperia 1 IX pricing above the Xperia 1 VII’s $1,499 level next year.