I've been an Insider ever since I can remember (years), but sadly I will be leaving the platform this week, the app gap is becoming greater, and there is just soooo much more available on the other platforms. Granted, a lot of it is rubbish, but there are some gems as well. I've found something similar to glance called ACDisplay which will work well enough (on the Galaxy S6) to replace it. I can use Outlook on Android too, I think the things I'll miss are the superior interface of Windows Mobile, and Alphajax, oh and the awesome LockMix app. I will however gain proper apps for things like Ebay, Amazon, my bank, a parallax 3D wallpaper (check those out on YouTube, they're awesome), a relatively cheap way of trying VR etc etc.
I'll probably be back at some point, but I fear another reset from Microsoft is on the horizon, so it's best sell my 950 while it's still worth something, and avoid my device going obsolete and plummeting in value. When MS realise their potential and release a groundbreaking category defining product, I'll very likely be back. I'll still keep an eye on things here though, I love these forums
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