What's the technical differences in between normal sim & micro or nano?

Why only after changing to micro or nano only can get LTE signal?

It's not device dependent?

Thanks for the info bro

Last nite I went to Maxis Centre to change my normal sim to micro sim in order to get the LTE signal as per Maxis live chat instruction.

However the Maxis Centre staff told me that all the sim are the same. It's just the coverage and whether my device can support LTE or not.

Therefore I still proceed to change it and hopefully not regretting of paying RM25 for the micro sim replacement which doesn't makes any difference.

Upon checking later, indeed the sim does make difference as my Sierra AirCard 320 4G LTE able to run in LTE which boosted up the download/upload speed

But I'm still wondering what's the technical reason behind these different SIM card type that makes the LTE..

This post has been edited by dennispss: May 26 2013, 06:55 PM

Hi bro, thanks for the explanation. I do agree with that.

LTE location tested was at Taman Sri Sentosa, off Old Klang Road.

Attached is the Speedtest result captured moment ago inside the house where signal in router is showing around 70%

By the way, how to get Cell ID? Using something like MDMA?

Last nite Speedtest was done using USB plug in. Normally I will plug into my TP-Link router to share the internet.

Any differences between this two connection method?

Previosly if I'm not mistaken, someone told me that MDMA doesn't support Sierra Air Card. Is that true?