×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Modification of IPhone5

Modification of IPhone5

Modification of IPhone5

(OP)
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
http://en.wikipedia.org/wiki/Flexible_electronics

Regards

RE: Modification of IPhone5

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. smile

Seriously, this so-called project is preposterous.

RE: Modification of IPhone5

(OP)
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.
http://www.ifixit.com/Teardown/iPhone+5+Teardown/1...
http://www.chipworks.com/blog/recentteardowns/2012...

RE: Modification of IPhone5

(OP)
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.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close