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I used the Microsoft Lumia 950 for AT&T for the last week as my primary phone.

The device was provided with Windows 10 Mobile build 10586.0 and the optional Continuum Display Dock.

The differences between the AT&T branded version of the Lumia 950 and the unlocked variant are minimal, but include a small AT&T logo on the back cover, some pre-installed AT&T software (which is removable) and support for PMA (Powermat) wireless charging The Lumia 950 brings a lot to the table regarding raw specs.

Today, we have Windows 10 Mobile, which is yet another rewrite of Microsoft's mobile ambitions.

Market share has also retreated due to the lack of new high-end phones and the widening app-gap problem.

Now, Microsoft and AT&T are getting behind the Lumia 950.Was it worth the wait and will it save Windows Phone or just prolong its slow demise?The last high-end Lumia was introduced in April 2014 with the Lumia 930, itself a carryover from the Verizon Lumia Icon earlier that year.And the pivotal Lumia 1520 was announced two years ago in November 2013.Needless to say, it has been a very long wait for windows phone fans for something new.Much has changed in the last few years for Windows Phone.