Best overall for long-term valueThese labels are our estimates, not price rankings. Prices are on request for every brand, so we weigh how long each tablet is supported, what other equipment it can replace and how many spare tablets a shift needs; no price decides the order.
i.safe MOBILE IS940.1
i.safe MOBILE · Dedicated Ex tablet
- Certified for
- Zone 1/21
- Marking
II 2G Ex ib IIC T4 Gb- Certification
- ATEX + IECEx, Class I Division 1
- Operating system
- Android 14
- Security updates
- Until Q4 2032
- Weight
- 1059 g
Our pick for long-term value is the i.safe MOBILE IS940.1, the tablet we would shortlist first for a team that wants one device to do the work of several. i.safe states security updates until Q4 2032, the latest maker-stated date for any Zone 1 Android tablet in our data, and it runs on a Qualcomm QCM6490 chip that i.safe describes as a long-term support chipset.
It may be charged in the hazardous area on i.safe’s IS-DS940.1 docking station, within the certificate’s limits (0 °C to +45 °C), so a crew can top it up between tasks and needs fewer spare tablets per shift. The 50 MP camera can take over photo jobs that would otherwise need a separate Ex camera, and the battery is user-replaceable outside the hazardous area, so the tablet is not retired when the battery wears.
One model also covers more sites. i.safe offers a mining version (IS940.M1, certified for Group I, underground mining) and an operator-panel version (IS-MOP1A.1) that docks the tablet with a connectivity system, which needs a separate Ex enclosure, so you can standardize on one tablet across process, mining and control-room work. It is intrinsically safe (Ex ib) to IIC T4 with dust group IIIC for Zone 1/21 under ATEX and IECEx, with Class I Division 1, IP68 and a rating to +55 °C.
The limits: T4 means checking gases that ignite below 135 °C, there is no depth sensor, and at 1,059 g it is heavier than the 8-inch Zone 1 tablets. The Windows IS945.1 shares the charging rule, but its update date is Microsoft’s and the edition year is unconfirmed, so the Android model ranks first.




