Microsoft launched the Lumia 950 XL and its little brother, the Lumia 950 to usher in the new era of Windows 10 for mobile. The 950 XL is the larger of the two phones, packing a 5.7-inch display, but bringing few features of its own.

Just as you’d expect from the flag bearers for Microsoft’s latest mobile software, the phones are stuffed with the latest technology on offer. The 950 XL has a pin-sharp high-res display, a powerful octa-core processor and a great 20-megapixel camera, but it’s all let down by the software.

While Windows 10 for mobile is a refreshing change from iOS or Android, and it’s pretty straightforward to use, it’s plagued by the same issue that faced Windows Phone 8 before it: apps. The app store is still woefully understocked compared to Android and iOS, and app developers rarely put any effort into bringing new releases to Microsoft’s mobile apps first.

This could change with Microsoft’s universal apps which theoretically can work across the mobile and desktop versions of Windows 10. App developers then would have a much larger audience to develop for and would therefore be more keen to bring their apps to Windows sooner.