Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Will this function as a phone and tablet (I currently have T-Mobile)?
Document: As I do not have a T-mobile account, I cannot comment on its cell data plan functioning but I can say that Wi-fi works perfectly. (The fact that my unit has T-mobile incorporated in no way interferes with Wi-fi usage. Both versions apparently operate and function in exactly the same way and the means of internet connection has no effect on the actual operation of the Streak.) It was fairly easy to enter my network password (though I do not care for virtual keyboards) and the Wi-fi signal was strong and remained so until I shut the tablet off.Dell includes a set of earbuds and a charger as well as a Quick Start Guide and the usual warranty and legal information.Operation is simple and intuitive.
The device is intuitive and fun to use. I purchased this tablet on amazon.com and paid full price. I have t-mobile cell phone accounts and have always been happy with dell. In this case, though, i paid full price because at this time I have no desire to turn on a wireless account for the device. since I received the streak I have been calling both dell and t-mobile to future out how to delete preinstated apps (like blockbuster and t-mobile chat). T-mobile won't support it because I don't have an account for the device and dell will only refer me to the wireless carrier.
This is a great product with great features. I bought this used from Amazon's warehouse deals and it was flawless. Unfortunately, I had to return because I didn't know that you cannot make phone calls from these Tablets using T mobile service.
Here's what I thought when I first bought this a year ago: This  my first tablet. Got it through my carrier (T-mobile). I've had it for a few weeks - so far so good. The battery/charger thing is kinda weird (battery can't be replaced, charger cord is short). If the battery goes completely out, let it charge for a while, then you can turn it on. I don't know why it took me another trip to T-mobile to figure that out.
I personally am using it in the worst of circumstances, which is WiFi. My model is capable of T-Mobile 3G (though I have not activated a service plan); as a result the 3G modem is continually connected - and there is no way to turn it off. Since the battery is sealed, there is no way to swap in a new battery. For my purposes the device goes about 3 hours or so (continuous WiFi use) before asking me to plug it in for more juice. This is not very much time for a tablet.
I myself plan to use it only at home or in a car and, in those situations, it can be plugged in.Physically, I wish that it had some sort of handle (or even a wrist strap). It's somewhat awkward to carry (I just ordered aQuality Royal Blue Dell Tablet Case with Reinforced Exterior and Soft Suede Interior for the Dell Streak 7 Wi-Fi Tablet  4G , Android , T-Mobile , Gray  + Live * Laugh * Love Vangoddy Wrist Band!! !in order to carry it about).
Let me start off by saying that I purchased this because my Galaxy tablet was stolen and I had to have a replacement and T-Mobile was out of the Galaxy Tablet at the time. So then and only then did I purchase the Dell Streak 7. FIrst off, T-Mobile sent me a prepaid card that had to be reactivated; Secondly, the daggone adapter was defective and would not charge after the initial charge. After T-Mobile found me a store in Houston, no less, that had a car charger, they made arrangements with Dell to send me a new adapter, on July 27, 2011.
T-Mobile also sells discounted versions of the 3G model at about half the price, if one buys a monthly data plan.The screen is capacitive, which means it is responsive to the touch and supports features like pinch-to-zoom. I don't recommend any other kind of screen, because a resistive screen (which responds to pressure) is a painful experience to use on a tablet.The device has 16Gb internal memory, and can support an additional 16 Mb via MicroSd card.Con:OK, there is no getting past it: the battery life is not very good.
Pros:Snappy ProcessorPerfect Size4G Built InCons:Battery LifeOne of the Viewing AnglesI recently got this from T-Mobile during a promotion for $99.99 on contract. I am an extremely avid Android user, and I did quite a bit of homework prior to purchasing this tablet. For those of you who are OK with playing around a bit and are on the fence, check out the XDA forums to see what's going on with development:[...]The good points of this device are, of course, the size (7" is perfect, no matter what Apple CEO Steve Jobs says), the Tegra2 processor, T-Mobile 4G, and the fact that it runs Android.
It is particularly good for reading e-books, for listening to music, and for watching video such as Amazon/Amazon Prime VOD as well as Netflix (which has recently been added).Tablet computers are the latest thing and I wanted to see how this one, a direct competitor to the iPad, would fare. (This is my first experience with any tablet computer; I am unfamiliar with the iPad or any other tablet. )I was supposed to receive the 'straight'Dell Streak 7 Wi-Fi Tablet(Wi-fi only) but in the event I actually received theDell Streak 7 4G Android Tablet (T-Mobile), the one which can connect to Wi-Fi plus the T-mobile cellular service.
Answer: Mine was unlocked so its hard to say beings unlocked messed it up.