Samsung’s has recently unveiled the Galaxy W, a 7-inch tablet that’s actually a phone, but the company may soon launch an even bigger smartphone. However, the South Korean giant appears ready to launch an even bigger smartphone later this year, a Galaxy Tab Pro 8.4 LTE version that will also pack phone capabilities. A video showing this 8.4-inch tablet version has already been posted on YouTube by TK Tech News, a publication which had similar access to unreleased Samsung devices recently.

This Galaxy Tab Pro 8.4 LTE version – it’s not clear what the device’s commercial name will be – appears to offer the same features as its Wi-Fi-only older brother. But the device also sports a SIM tray, required for cellular connections, and appears to come with a working Phone app preinstalled. An LTE version of the Galaxy Tab Pro 8.4 is already available in various markets.

The device TK Tech News used is a pre-release version used for network and/or bloatware testing, with the tablet expected to hit T-Mobile in late summer. The smartphone/tablet should retail for around $500, and appears to be T-Mobile’s answer to AT&T’s PadFone X combo.

The video preview of this T-Mobile-bound Galaxy Tab 8.4 LTE device follows below.