Right,  lets begin to install the chip.
Take the wire that you have chosen to use and make sure that you can identify each wire
individually as you can't get mixed up later.  You can use thicker insulation to wrap around the wire or number the wire i.e. 1,5,6,8 etc.
When wring the phone I work from the chip in the phone [we will refer to this as the EPROM]
to the pic chip. Simply solder the wire to the legs of eprom as show in the pictures linked below,
then place a small bit of installation tape over the eprom to prevent it shorting out.
Don't solder the pic chip in yet. With the wire in place you have three main choices of which way the wire should be routed  to the chip, see the second picture below.

There are two different EPROM's in some phones, most are 32k and some are 64k.
The only difference is one can hold more information than the other. Check and see which type of eprom is in the phone that you are about to chip. Just look at the eprom on the phone if its a
32k in should read 24c32, if its a 64k it should read 24c64, or something similar.
For 32k eprom click  here.
For 64k eprom click  here.




The red line above is one possible way of installing the chip but you have to cut a small hole in the side of the internal plastic casing, I prefer this way as from the outside you can't see any wires or any sign that the phone has been opened.

The blue line is where the wires would come up from the eprom and through a small hole that is mainly for the battery connector, this way is very easy but the wires are visible from the outside when the battery cover is removed.

And last is the yellow line, there is a small hole in the plastic internal casing that the wires can go through, I find this a bit tricky but it works well, I must warn you that there is a screw hole beside it so if you use this way you must be careful not to damage or break the wires when screwing the outer casing back on.

Chose which way you want to route the wires then we replace the internal case.
Replace the casing the same way as you removed it before and replace the screw that connects the two internal casings together. Leave the LCD till the end.
Now we have to find a good place to mount the chip, the picture below shows two locations
that I use, one is for the surface mount type chip and the other is the through hole type.

As you can see the wires come out from which ever way you chose and connected to the chip.
Before placing the chip you must cover the area where the chips is to be placed with a small bit of insulation tape to prevent it shorting out. Solder the chip using the first picture as a guide to wiring it. When done place the chip in the one of the above positions and tape it down to prevent it from moving. Replace the battery connector, then the LCD and then the two outer cases, screw the cases together, replace the sim and battery and then move on to the next stage, testing your phone.
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