I know how scary the words you need a
new logic board can be now you're
thinking where can I get my iPhone for
recycle properly or can I sell my iPhone
for for Parts I have an option number
three fix it you can do it let's do it
together
hey it's Gwendolyn with iFixit and today
i'm going to walk you through replacing
the logic board in your iPhone 4
remember this is just an overview so be
sure to check out our step-by-step
guides when you do your repair if you're
working on a verizon phone your repair
is going to be slightly different so
make sure you're checking out the right
guide for the right phone you're working
on for this repair you're going to need
an iphone 5-point pentalobe screw driver
if your phone has external pentalobe
screws a phillips triple zero
screwdriver if your phone has external
Phillips screws an iPhone sim eject tool
or you could use a paperclip a Phillips
double zero screwdriver plastic opening
tools 2.5 millimeter flat head
screwdriver and a spudger I have all the
parts and tools I need in my pro tect
tool kit and it's not listed on the
repair guide but I never do a repair
without my magnetic map again it's
magnetic so none of those little parts
will roll away and it keeps me organized
so let's get started first make sure
your phone is turned off and then you're
going to remove the two screws at the
bottom near the dock connector okay with
those screws out now we're going to take
off the back panel and to do that you're
just going to push with both thumbs up
and it should come apart like that and
then we can just take it off now we can
get the battery off and to do that we're
just going to get our Phillips driver
and unscrew the one screw that's holding
on the battery connector
now we can use our opening tool to pry
off the battery connector and while
you're down there remove the contact
clip now we can use this tab to get the
battery out and if you're having a
little trouble you can use your opening
tool now we can take out the SIM card
and to do that we're going to use our
little sim ejector tool and we're going
to poke that in the hole right here on
the side and it pops right out there we
go now we can remove the two Phillips
screws that are holding on the dock
connector bracket now that we have those
screws off we can take the bracket off
with our fingers and then we can
disconnect that cable from the logic
board with your opening tool with that
unstuck we're going to use the pointy
end of our spudger to disconnect the
antenna cable right here now we can
remove six screws that are holding the
logic board to the rear case there's one
at the bottom and there are five at the
top and with those screws out now we can
take off the bracket with our fingers
and get to work on the rear facing
camera and to do that I'm just going to
use my spudger we're going to pry up
that cable and set it aside
now that the cameras out we have one
screw in the middle of the logic board
that's near the pull tab for the battery
if there's a sticker covering it go
ahead and take that off first and then
get to work removing the screw now we
can use the flat end of our spudger to
disconnect the five cables at the top of
the board now that all those cables are
disconnected we can attack the last
stand off screw with our flat head
screwdriver and that is the last screw
now we can get our logic board out but
be sure that you're not going to tear
any of these cables that we disconnected
earlier and on reassembly make sure this
tiny antenna at the bottom is not
underneath the logic board now you can
slip in your new logic board and work
backwards on our step by step guide to
reassemble your phone you can find all
the parts and tools you need for this
and many other repairs at ifixit.com and
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