Troubleshooting A Bad Antenna On The Iphone
Disconnect the contact for both the volume control cable and the standby cable. Loosen them very fastidiously in the order shown below. To do this, gently go underneath the contact with the pointed side of the spudger and lift it up. When you could have succeeded and the display could be lifted slightly bit, work your way fastidiously on the skin until the two long sides are loosened .
First remove the two Phillips screws from the silver cowl . The silver cowl is mounted with 5 Phillips screws. Remove them and place the screws in a single section of the magnetic pad. To do that, use the sharp end of the ESD spudger – go very gently underneath the plug .
Step 9
A suction cup is perfect for lifting smooth surfaces such as displays or rear glass panels. You need a flat plastic prying tool to disconnect the varied plugs and connectors. We suggest storing your screws so that you don’t combine up the assorted screws and small elements.
Flip the iPhone again over and insert a plastic card between the case aspect of the battery and the rear case. If any of the adhesive strips broke off and the battery stays stuck to the rear case, put together an iOpener or use a hair dryer to warmth the rear case instantly behind the battery. The strip will stretch to many times its original size. Continue pulling, re-grabbing the strip near the battery if necessary, till the entire strip comes free. Be cautious to not snag it on the nook of the battery or on any of the other inner iPhone parts.
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When reassembling, orient the plate with the small tab to the proper and the longest flat edge towards the highest of the cellphone. Use a plastic opening tool to raise the logic board up sufficient to seize along with your fingers. Be cautious not to over-tighten the screws, and do not pressure them.
However, the 800 MHz band is a subset of the 850 MHz band, which probably explains why the system was marketed as quad-band. The chip-sets have been manufactured by Skyworks Solutions and Infineon for GSM version. Manufacturers usually suggest their phones are higher than those of a competitor by highlighting “key performance indicators” — what they consider necessary technical specs. Such tech specs include digicam resolution , however not antenna efficiency. A consequence of poor antenna efficiency is that when customers are unhappy with their phone signal, they blame the cellular community operator.
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