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Modification of IPhone5

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lewisFeng

lewisFeng

Electrical
Joined
Feb 5, 2012
Messages
24
Location
US
Dear friends
Now I'm doing a project to add the third RF path to Iphone5, for it can't accomplish the task of SVDO (simultaneous voice and EVDO). This is a big problem for subscribers using Verizon and Sprint's network.
You may know the orientation of antennas on Iphone, to describe it clearly, please check the picture below.
The problem is reverse engineering, for apple adopt a new lightning connector with TI BQ2025 chip for security purpose ensuring reliable and high quality (licensed) peripherals. The worse case for me is only abtaining some power for lightning connector, Do you think there is any posibilit to reuse the RF chip inside Iphone to provide a single additional antenna.
As an alternative solution, how about setup this third RF path by the headset jack? Yes, I can provide more pictures to show the internal structures and Chip infomations.
Another question is if I can't reuse the internal RF chips, I'll setup a external link with it's WIFI antenna. That is to say I'll build a TX/TR for CDMA data only, and redirect signal to WIFI antenna by addional TX/RX. There maybe some EMC consideration, How do you think?
This device maybe build by Flexible electronics and attached at the backside metal area of Iphone

Regards
 
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This project is extremely trivial; it can be accomplished in an afternoon at a total cost of next to nothing. 1) sell the iPhone 5, 2) purchase a Samsung Galaxy S3. :-)

Seriously, this so-called project is preposterous.

 
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I always appreciate your system advices and the Higgler's design tips, you are the tutors here. But you know the client's demand is everything, they always believe 'Anything one man can imagine, other men can make real'. The fact is Samsung is expelled from USA's smartphone market due to the bit lawsuit. Maybe client think the magic of sweeping the flaw of Iphone5 have huge potential buyers.
Yes, I was on the first stage of giving the feasibility of this project. Although I know part of the story, I still want to make sure there is nothing omitted.
 
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Yes, you are right. It is difficult to realize an EVDO USB Modem without SIM card. That is to say if I can't setup a route to the SIM card inside through lightning connector, the only way is to capture SIM infomation in air. So it is preposterous.
 
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