What are The Easiest and Hardest Smartphones to Repair?

Just search on google. The answer is as below. If you have different idea, please feel free to leave your comment.

As defined by iFixit, which is a platform share the teardown guideline for all equipment. Repairability is rated on a scale of zero to 10 — ten being the easiest to repair and zero being the hardest.

To receive a good score, a device must be easy to disassemble. A service manual should be available, and points are deducted or awarded based on difficulty to open and complexity in replacing major components. Component modularity and ability to upgrade easily can boost the device's score, while use of non-proprietary tools for servicing can reduce it.

iFixit's list doesn't cover all the smartphones on the market, but it does address most of those available in the United States. According to iFixit, the repairability champion is Motorola, whose Droid Bionic and Atrix 4G are the only devices on the list with nine points. Samsung's Galaxy S4, as well as its younger siblings S3 and S2, both received eight points, as did the Galaxy Note and Galaxy Note 2.

Apple's iPhone 5 also has a solid seven, a score also awarded to Google's Nexus 4, Motorola's Moto X and the iPhone 3G and 3GS. The iPhone 5C and 5S have a slightly lower score of six, since their batteries are harder to remove than the iPhone 5.

The original iPhone, which debuted in 2007, has a score of two, as it has hidden clips make it "nearly impossible" to open and its battery is "very difficult" to replace.

The HTC One rounds out the bottom of the list with a score of one. iFixIt said the phone's construction is solid, but it is "virtually impossible to open without extreme damage to rear case," making it extremely hard to repair.