For a limited time, T-Mobile will be offering those who purchase the HTC 10 a free HTC Rapid Charger and the HTC Ice View case for free, a $85 value. This offer is quite enticing, as the rapid charger will let you top up your battery in a short amount of time, so you never have to worry if you will have enough power or now. The Ice View case adds style and protection to the phone, which is great for any new investment.
From T-Mobile's announcement:
Anyone that buys the HTC 10 at the Un-carrier can get an HTC Rapid Charger and an HTC Ice View case ($85 total value) for FREE when they purchase between May 18th and May 24th, while supplies last.
If you are thinking about getting the HTC 10 from T-Mobile, make sure that you try and get it early to get the goodies with it. The carrier will be offering it for $0 down and $28.34 a month for 24 months, or $679 upfront.