. These were the precursor to modern "apps" and allowed for manual installation of programs directly on the device. A WhatsApp CAB file would have been the primary way for a Windows Mobile user to join the burgeoning global network of instant messaging. The End of an Era
Here are a few variations:
In the late 2000s and early 2010s, HTC was a dominant force in the smartphone world, producing iconic devices like the HTC Touch Diamond, HTC Touch Pro, HTC HD2, and HTC TyTN II. Many of these ran on or 6.5. At that time, WhatsApp was emerging as a revolutionary cross-platform messaging app. For users of these classic HTC devices, the only way to install WhatsApp was via a .CAB file (the standard installation package for Windows Mobile), often sought after as a free download . whatsapp messengercab for htc windows mobile 61 free