Following Cricket and T-Mobile, AT&T will reportedly be offering the Microsoft Lumia 640 and the bigger sibling Microsoft Lumia 640 XL this month. Prepaid service provider Cricket is apparently selling the Lumia 640 for $129.99. Even though the specific T-Mobile price is unknown, the release date is pegged for June 17, notes Phone Arena.

Tech Website WinSuperSite was apparently tipped by a Lumia rep who said that the Microsoft Lumia 640 and Lumia 640 XL are headed to AT&T and that the release dates for those smartphones would be towards the end of June. The rep added that the Lumia 640 will be released first and the expected price range is $100 and $150.

The Lumia 640 XL, on the other hand, will be released later this month at a price of $200 and $250.

As far as the key Lumia 640 specifications go, the smartphone features a 5-inch IPS LCD display aided by a good screen resolution of 1,280 x 720 pixels. This display combination translates to a pixel density of 294 ppi. When it comes to hardware component, the device is powered by a quad-core (Snapdragon 400) SoC running at 1.2 GHz and backed by 1 GB of RAM configuration. Speaking of software, this Lumia device runs on Windows Phone 8.1, along with the latest Lumia Denim update, right out of the box.

The handset comes equipped with 8 GB of built-in storage capacity and microSD card slot for expansion up to 128 GB. Speaking of camera specification, the smartphone houses an 8 MP rear-facing unit, packed with autofocus and LED flash. In addition, there is also a 1 MP snapper for selfies at the front. Lastly, the whole configuration is backed by a modest 2,500 mAh battery unit. This battery unit is apparently capable of offering up to 17 hours and 30 minutes of talk time and 864 hours of stand-by time.

The Lumia 640 XL, on the other hand, comes with similar specs as the smaller sibling Lumia 640. However, the display of the handset is quite larger at 5.7-inch. With 720 x 1,280 pixels resolution on board, the pixel density of the handset drops to 259 ppi. Moreover, the primary and secondary camera units have also been improved to 13 MP and 5 MP, respectively.

Microsoft has not confirmed the release date of this device via AT&T yet, notes WinSuperSite.