My daughter’s mobile phone was going flat quickly. On looking through forum postings it seemed a common problem after a few years of use.
On to repair! or so I thought.
Samsung and other manufacturers have made a good job of bricking their phones together with glue. Instead of lots of tiny screws they now use glue strips to hold the components in place – perhaps making manufacture easier, but certainly making repair harder.
There is an excellent guide on how to do the replacement by yourself over on iFixit, as well as a package of the battery and replacement glue strips to reassemble the phone. However, be aware that the whole thing isn’t for the faint of heart!
Back glass sweated off 
The innards 
Glue strips everywhere 
… remove old battery strips 
New battery in position
As a side note, the procedure using the iOpener did not work for me – I had to use a commercial heat gun and really blast the bottom cover to make the glue strip soften. Perhaps a hair dryer could also be used to do this.
The result is a phone that works, a happy daughter, and a proud dad!
RandomAI 