[NEWBIE] Question before buying the Raspberry Pi 3G/4G&LTE Base HAT


I was thinking about buying the “Raspberry Pi 3G/4G&LTE Base HAT” but I have no idea how and whether it would work in my country.

Q1. I see that it has a slot to insert a SIM card so can I just insert a SIM card, connect it to my Pi and then start using mobile data?

Q2. If yes, what frequencies does the hat use? I was unable to find any documentation about it anywhere so I have no idea if it will work in India.

Q3. I see in the description that I will be needing a " Quectel EC25 Mini PCle 4G/LTE Module". What exactly does this module do? Will I be requiring the module if I use the hat by only inserting the SIM card?

Q4. I want to use this in India where most places don’t have 4G / LTE and some places don’t even have 3G. So will it work on EDGE? I only want to send 10 integer values over the internet once every hour.

Thank you and regards.

Hi @lolcocks123,

Yes, you can. All the necessary information is here: https://docs.sixfab.com/docs/raspberry-pi-3g-4g-lte-base-hat-introduction

You need a module to use the HAT. List of compatible modules: https://docs.sixfab.com/docs/raspberry-pi-3g-4g-lte-base-hat-technical-details#section-compatible-mini-pc-ie-modules

You can find the frequency used by EC25 in “Regional Options” section.

For more information: Quectel EC25.

If you have any other questions, just let me know and I’ll be happy to help.

Best regards.

Thank you @ensar.

The documentation and information on Quectel clears up a lot of my doubts.

I am still confused about one part though.

The module is mandatory, so I will have to get the Quectel EC25-E to use in India.

But after I get the module, is the SIM card necessary?
And if yes, can I use any SIM card that works within India or are there limitation to where I can use it?

Hi @lolcocks123,

Yes, you must use a SIM card. Base HAT Getting Started

You can use any SIM that supports 4G for India.