A series of photos posted earlier today by Boy Genius Report show an unreleased white iPhone 4 unit running on T-Mobile USA network. The device looks like an iPhone 4, although, as BGR notes, the proximity sensor looks different than the one shown in the (allegedly) final white iPhone 4 that’s been already sold in the UK. BGR claims the device, just like the Vietnamese videos from last week, is running an old and internal test version of iOS 4, confirmed by the several Apple internal and field-testing applications like Radar and Apple Connect or the preference panels to measure the performances of the device.

That’s right, you’re looking at photos of an iPhone prototype with T-Mobile USA 3G bands. The actual internal model is N94, and if you remember, the Verizon model is N92 while the standard GSM variant is N90. We have verified that the phone itself is running a test version of Apple’s iOS, much like the one we saw in those videos from Vietnam, and it includes internal Apple test apps like Radar and Apple’s employee directory app. Additionally, the front of the white iPhone pictured looks a little different from the photos of the retail white iPhone 4 that surfaced recently — specifically, the proximity sensor has changed on the retail version.

The model number of this white iPhone 4 is N94, the same one that months ago was mentioned in some iOS 4.3 code strings related to the A5 chip — also implemented on the iPad 2. Whilst rumors point to the white iPhone 4 finally being released on April 27th, the N94 model number and A5 processor indicate this might be an updated version of the iPhone 4 coming out later this year — perhaps the “iPhone 4S” select game developers are already testing ahead of the WWDC and the iOS 5 announcement. It’s also worth remembering that AT&T has filed documents in the US to acquire T-Mobile — if the two networks merge, the iPhone will eventually work on the old T-Mobile network (which currently has different radios and frequencies than AT&T). However, the acquisition is rumored to take several months before completion, and Apple could release an iPhone 5 / iPhone 4S this Fall that also runs on the existing T-Mobile network.

Check out the full gallery of leaked shots here.

T-Mobile may hide its frustration for not having the iPhone with clever commercials, but it’s pretty clear that they would love to have the device on their portfolio. In their latest commercial, the carrier’s lady says that even on Verizon, the iPhone can’t compete with the 4G network offered by T-Mobile. Either Verizon or AT&T, 3G is slow.

“How do you tell them apart? Does one of them have nation-wide 4G like me?”, T-Mobile girl asks. Verizon guy replies: “No choice is still a choice”. I guess no iPhone choice is still a choice for T-Mobile, too. [Youtube via 9to5mac]

According to Marketing Week, the company that owns the telecom brands Orange and T-Mobile, Everything Everywhere, will announce a deal for UK customers to purchase the iPad through their websites and retail stores later today. The iPad will go under a price cut, and customers will have to sign up to a contract for data usage.

It is also believed that subsidized iPads could be sold at £200. We’ll keep you posted about the announcement which should be coming later today.

With its latest ad to promote the MyTouch 4G, T-Mobile makes fun of Apple’s FaceTime restrictions (it only works on wifi, remember?) and blames AT&T for slowing down the entire iPhone 3G experience.

In the ad, very similar to the old “Get a Mac” ones, a young lady says “Hi. I’m a T-Mobile MyTouch 4G.”, then the camera reveals a man who says “And I’m an iPhone 4.” Another man is hanging on his back –he’s the old AT&T network. The ad goes on to say that Apple’s FaceTime works “everywhere there’s wifi, like in airports”, while you can make video calls anywhere with T-Mobile’s strong 4G network.

It’s a clever ad, and I like it. [via TUAW]