BlackBerry DTEK is an Android smartphone co-developed and distributed by BlackBerry Limited, and manufactured by TCL. DTEK comprises two models: DTEK50 which is a modified and rebranded variant of TCLs Alcatel Idol 4 (released 26 July 2016);^[1] and DTEK60 which is a modified and rebranded variant of TCLs Alcatel Idol 4S (released 25 October 2016).^[2] The DTEK models are the second and third Blackberry Android phones after the Blackberry Priv. Like the Priv, the DTEK Android operating system is customized with features inspired by those seen on Blackberry's in-house operating systems, and with hardware and software security enhancements (such as the titular DTEK software).

The DTEK50 received mixed reviews, with critics suggesting that the device did not sufficiently differentiate itself from other smartphones in its class.^[13][14][15] The DTEK60 gained slightly more favourable reviews, particularly the clarity of the camera, its overall good performance and battery life.^[16]

Engadget positioned the DTEK50 as a "fleet device" meant to be purchased in bulk for adoption by a company's employees due to its low price and focus on security. The device was described as being "respectably well built and even sort of handsome in an understated sort of way", and being thin and light yet not feeling "cheap". The DTEK50's display was considered to be "pretty damned good" for a mid-range device and only "fell short" in comparison to the similarly positioned ZTE Axon 7 (which features a 1440p display). The convenience key was panned for not having as many supported features as the equivalent on the Idol 4. The lack of a fingerprint reader (especially given the device's wider focus on security) and inconsistent battery life was also panned. In conclusion, it was argued that the Moto G4 Plus was better value at the same price point due to its larger amount of storage and inclusion of a fingerprint reader, and that "as a ploy to appeal to those crucial business customers, it's brilliant. For them, the DTEK50 is a solid, not-very-expensive option with the security chops to put IT paranoiacs at ease. As a phone for regular people, though, the DTEK50 is a much a tougher sell."^[13]

The Verge felt that the DTEK50's display was "pretty nice for a $300 phone", but the overall hardware was described as being of average specifications. The DTEK50's Android software was praised for maintaining the user experience introduced by the Priv, but with fewer bugs and additional refinements. The camera was appraised as being decent "under ideal conditions", and poor in low-light situations. The phone's performance and battery life was also criticized. In regards to security, it was noted that Android "Marshmallow" had already implemented security features such as mandatory device encryption and finer control of permission grants, but that the DTEK software helped to promote privacy best practices, and that BlackBerry had consistently delivered Android's monthly security patches to its devices. However, the DTEK50 was panned for not including a fingerprint reader despite this focus on security. In conclusion, it was argued that while BlackBerry had "identified a market need and theoretically could do a great job filling it" with its security-oriented focus, the DTEK50 "fails to stand out in a competitive field of midrange smartphones."^[14][17]

CNET similarly pointed out that many of BlackBerry's claimed security enhancements "seem to either be placebos or functions already found on stock Android devices", such as device encryption (mandatory on Marshmallow) and boot verification (which is strictly enforced on Android Nougat, but with notifications on Marshmallow),^[18][19] and that the device as shipped was vulnerable to the Quadrooter exploit (which was patched on unlocked models at the time of the review).^[15]

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