Anyone using a SIM800 module? Does it still work?

Forums › Gadgets, robotics, home automation, electronics (including wearables) › Anyone using a SIM800 module? Does it still work?

1 | 2 | 3

12181 posts

Uber Geek
+1 received by user: 8475

Trusted

Lifetime subscriber

#3304635 3-Nov-2024 07:42

I still have contacts in OneNZ that actually work on the RAN (radio access network) I will ask one of them and get it from the horses mouth and update you when I get a response

Hwale

71 posts

Master Geek
+1 received by user: 19

#3304636 3-Nov-2024 07:48

Linux:

Hwale:

As I said, they don't know about their own product.

@Hwale Front line staff do not need to know about a change in the 900Mhz band as approved devices will keep on working

You import a unit that does not work in the GSM900Mhz band and only the EGSM900Mhz that is your problem

You should of thought about this when buying the unit

Good grief I've no idea why you've got such a bee in your bonnet.

If you're right about the EGSM band being the cause, then the problem is indeed the network. You keep admitting I'm correct when I say that One's support staff don't know their own product, but somehow I'm in the wrong for expecting them to.

Which is exactly why I'm here discovering that some random off an internet forum has more information than OneNZ could give me, which only further proves my point.

What makes you so sure it's the EGSM band being refarmed? Do you have any solid info on this being the case? It sounds very plausible.

Linux

12181 posts

Uber Geek
+1 received by user: 8475

Trusted

Lifetime subscriber

#3304637 3-Nov-2024 07:55

The problem is not the mobile network the problem is with your product that you purchased not actually supporting the GSM 900Mhz spectrum (thought we had already gone over this)

What part of this do you not understand?

The 2G / GPRS network is still up and running taking traffic even you know this as you have tested on a mobile phone!

Linux

12181 posts

Uber Geek
+1 received by user: 8475

Trusted

Lifetime subscriber

#3304639 3-Nov-2024 08:04

@Hwale you can't expect front line staff to know about every single network / IT change it would be information overload and many front line staff would not actually understand the change and the impact it could cause

Network changes happen just about every single day! I worked on this side of things in the Vodafone France street technology centre

Hwale

71 posts

Master Geek
+1 received by user: 19

#3304640 3-Nov-2024 08:05

Linux: The problem is not the mobile network the problem is with your product that you purchased not actually supporting the GSM 900Mhz spectrum (thought we had already gone over this)

What part of this do you not understand?

The 2G / GPRS network is still up and running taking traffic even you know this as you have tested on a mobile phone!

The problem, is that my SIM800L module no longer connects to the network. It connected before, but now it doesn't. That's what the problem is.

If my freezer turned off overnight, and all my food defrosted leaving a puddle of water on the ground, I'd have a problem. If I did some troubleshooting, I might find that the electricity supply to the house no longer worked because the provider stopped supplying electricity. That wouldnt be a problem with the freezer would it? I wouldn't have someone on a forum telling me that I "should have thought about that" when I bought my fridge freezer.

If the EGSM band has been re-farmed, that's still MY problem, but MY problem is that this portion of the GSM band is no longer available. Furthermore, there was no forewarning or even any knowledge on the provider's part that it was going to happen despite the fact that many devices still use this band which OneNZ would be well aware of. MY problem is with the network, because the network has changed.

Hwale

71 posts

Master Geek
+1 received by user: 19

#3304641 3-Nov-2024 08:08

Linux:

@Hwale you can't expect front line staff to know about every single network / IT change it would be information overload and many front line staff would not actually understand the change and the impact it could cause

Network changes happen just about every single day! I worked on this side of things in the Vodafone France street technology centre

Refarming the entire EGSM band isn't quite on a par with daily network updates and optimisations.

HP

Shop now for HP laptops and other devices (affiliate link).

Linux

12181 posts

Uber Geek
+1 received by user: 8475

Trusted

Lifetime subscriber

#3304642 3-Nov-2024 08:08

What makes you so sure it's the EGSM band being refarmed? Do you have any solid info on this being the case? It sounds very plausible

I am 99.9% sure from your description and checking the specs of the SIM800 unit - Even look at the name of it " SIM800 " as it is designed for the 800Mhz band the name of it is not SIM900

When one of the guys I worked with me I gets back to me I will be 100% sure as they are a RAN engineer

Linux

12181 posts

Uber Geek
+1 received by user: 8475

Trusted

Lifetime subscriber

#3304643 3-Nov-2024 08:11

Hwale:

Linux:

@Hwale you can't expect front line staff to know about every single network / IT change it would be information overload and many front line staff would not actually understand the change and the impact it could cause

Network changes happen just about every single day! I worked on this side of things in the Vodafone France street technology centre

Refarming the entire EGSM band isn't quite on a par with daily network updates and optimisations.

@Hwale Yes it is! LOL when 1800Mhz GSM was re-farmed for 4G / LTE it was done over night

Far out OneNZ may have only had a small part of EGSM band like 5Mhz and re-farming 5Mhz is nothing!

Linux

12181 posts

Uber Geek
+1 received by user: 8475

Trusted

Lifetime subscriber

#3304645 3-Nov-2024 08:17

2degrees re-farmed 5Mhz of 900Mhz from 3G to 4G over night

Hwale

71 posts

Master Geek
+1 received by user: 19

#3304646 3-Nov-2024 08:24

Linux:

@Hwale Yes it is! LOL when 1800Mhz GSM was re-farmed for 4G / LTE it was done over night

Far out OneNZ may have only had a small part of EGSM band like 5Mhz and re-farming 5Mhz is nothing!

I doubt they're making daily changes which render devices unusable every time. Shifting about some settings sure, but re-purposing an entire band thats been in use for what, decades? Not the same thing and you know it's not.

Linux

12181 posts

Uber Geek
+1 received by user: 8475

Trusted

Lifetime subscriber

#3304647 3-Nov-2024 08:27

Hwale: If the EGSM band has been re-farmed, that's still MY problem, but MY problem is that this portion of the GSM band is no longer available. Furthermore, there was no forewarning or even any knowledge on the provider's part that it was going to happen despite the fact that many devices still use this band which OneNZ would be well aware of. MY problem is with the network, because the network has changed.

Yes it is 150% your problem and OneNZ do not need to notify you as ' YOU ' decided to purchase a ' product ' that does not actually support all of the 2G 900Mhz band only part of it

You don't own the spectrum that the carriers have rights to so if they want to make changes to it they are allowed to

The 2G / GPRS network is still up and running

Geekzone support

Support Geekzone with one-off or recurring donations Donate via PressPatron.

Linux

12181 posts

Uber Geek
+1 received by user: 8475

Trusted

Lifetime subscriber

#3304649 3-Nov-2024 08:28

Hwale:

Linux:

@Hwale Yes it is! LOL when 1800Mhz GSM was re-farmed for 4G / LTE it was done over night

Far out OneNZ may have only had a small part of EGSM band like 5Mhz and re-farming 5Mhz is nothing!

I doubt they're making daily changes which render devices unusable every time. Shifting about some settings sure, but re-purposing an entire band thats been in use for what, decades? Not the same thing and you know it's not.

It is not the entire band it is only part of it! You have proven this like myself

OneNZ do not have rights to the entire band of 900Mhz

RunningMan

9185 posts

Uber Geek
+1 received by user: 4838

#3304650 3-Nov-2024 08:40

Linux:

You import a unit that does not work in the GSM900Mhz band and only the EGSM900Mhz that is your problem

Is EGSM 900 not a superset of GSM 900? i.e. an extra 10MHz of bandwidth at the lower end of the spectrum? Which would mean that any EGSM device would also work on GSM?

Perhaps it's a case of the OP's device being in an area where it was connecting to a band which was reallocated, and the signal on a remaining band is too weak for the device.

Does the OP have data from when it was last connected to establish what band it was connecting on at the time?

Hwale

71 posts

Master Geek
+1 received by user: 19

#3304651 3-Nov-2024 08:43

Linux:

Hwale: If the EGSM band has been re-farmed, that's still MY problem, but MY problem is that this portion of the GSM band is no longer available. Furthermore, there was no forewarning or even any knowledge on the provider's part that it was going to happen despite the fact that many devices still use this band which OneNZ would be well aware of. MY problem is with the network, because the network has changed.

Yes it is 150% your problem and OneNZ do not need to notify you as ' YOU ' decided to purchase a ' product ' that does not actually support all of the 2G 900Mhz band only part of it

You don't own the spectrum that the carriers have rights to so if they want to make changes to it they are allowed to

The 2G / GPRS network is still up and running

You're still sperging.

EGSM is an ITU designated GSM band in its own right, you don't just switch it off arbitrarily.

Hwale

71 posts

Master Geek
+1 received by user: 19

#3304652 3-Nov-2024 08:47

RunningMan:

Linux:

You import a unit that does not work in the GSM900Mhz band and only the EGSM900Mhz that is your problem

Is EGSM 900 not a superset of GSM 900? i.e. an extra 10MHz of bandwidth at the lower end of the spectrum? Which would mean that any EGSM device would also work on GSM?

Perhaps it's a case of the OP's device being in an area where it was connecting to a band which was reallocated, and the signal on a remaining band is too weak for the device.

Does the OP have data from when it was last connected to establish what band it was connecting on at the time?

The devices have been tested across multiple tower locations but that would have been my first thought.

1 | 2 | 3