Thursday 23 October 2014

Cut your SIM card to MicroSIM yourself

At times Vodafone or AirTel galleries may charge 50 to 100 for cutting your SIM card...cut it yourself instead! I have cut 5 cards for family and friends including myself and ALL SUCCESSFULLY! So you see how easy this is with little skill.

Prerequisites :
Patience and calm! :)
Download MicroSIM template and print 1:1 scale on A4 size paper
Pair of scissors.
Cellophane tape or double sticky tape.
Ball pen (for drawing fine lines).
Ruler (as thin and sturdy as possible).

Steps :

1) Note down this number and keep it safe in your device or anywhere.



2) Download and print 1:1 scale this PDF file which acts as a template for marking cutting lines.



3) Fold a single sided tape as shown to make 2 sided and paste on template. Or use a thin double sticky tape.



4) Carefully place the SIM card on the template ensuring it perfectly fits and is centered. Perfection is important!



5) Now look perpendicularly from above to avoid Parallax Error and draw the perfect line. Parallax error will cause the line to be displaced from the required line.





6) Now with a steady and single stroke cut along the line looking closely where you cut.
If you cut outside the border its okay but do not cut too much inside border to render the card useless. (Even if you do its okay...take this as an experience and there is a solution to that below). Small error is okay. Some cards may have the circuit too close to the line. Its okay if you have to cut along the yellow part as the manufacturer knows it will be cut during MicroSIM cutting.



7) Now check if it goes inside the slot properly and make fine adjustments if it doesn't. The happiness when you hear that perfect 'click' is priceless! :)



Solution if you commit too much of an error :
Cut the SIM to NanoSIM and use a MicroSIM Adapter!! :)

Adapters :
If you want to revert to normal SIM you can buy Griffin Adapters like this one available for less than 50. Dont buy online as they sell it for upto 100 with shipping.




Wednesday 22 October 2014

USB Cable and Headphone care

I have always seen people being very careless about taking MicroUSB cable and Headphones! What eventually happens is that they end up reducing its life as it is not built to take on a beating and tight knots getting tossed around in your bags. Do buy a small plastic box and then then toss it anywhere you want...it will be safe! Plus you can also add a 'spring support' as I have described below.

Safe way to keep headphones:

Avoid keeping things with a magnetic field or powerful magnets near headphones.




Safe way to keep USB cable:

If the cable is bent and tied as it arrives in the box (some people say, "Always keep as it arrives in box" which may be a wrong notion) then after some days you will notice cracks in the rubber. Keep it curled instead.



Spring support

Hook one end of the spring to the cable and go on rotating it clockwise until it is completely curled around the wire...we now have added strength and rigidity to the joint...so it will be safe from tight bends.


Friday 3 October 2014

Don't try to covert original Nokia MicroUSB cable to OTG

I recently searched around for a cheaper option to the pocket burning MicroUSB OTG cables available on the market. I ended up on YouTube searching how to solder one myself. I found the tutorial which asked to short the pins 4 and 5 on the uUSB module for OTG recognition on devices.

I started the process. The only mistake? I chose an old 2010 Nokia MicroUSB cable that came with my old Nokia phone to operate on. I cut open the sheath to find a steel encasing, opened it to find yet another casted rubber case and when I cut open that there was no circuit inside for me to be able to jump that pin 4 and 5 connection! 

Just ended up wasting a good MicroUSB cable. So to all my fellow geeks out there...please don't waste your Nokia cable for OTG making. :) 

Also don't try to rip up a Samsung cable either! Its MicroUSB module doesn't have the pin 4 at all! Check out the inside from the front. There is no metal connector in slot 4.