I have been professionally developing a "device that use LTE/3G or other cellular networks" for decades now, and WireShark is one of our major test tools. Data can be encrypted (generally at layer 2, which is an option, or layer 4, by writing code to do so), but much (most?) is not.
If I'm worried about a device that could send some personal
3g v Wifi Security
Standard wifi v LoRaWan/LPWAN
If I'm worried about a device that could send some personal information without my consent is unplugging it and returning it to the store the only solution.
3g v Wifi Security
It is possible to sniff 3G signals, e.g. , however of more concern might be ensuring the packets cannot be decrypted on the cloud ...
I am answering your title - which does not seem to match your question.
3GPP is a standards body. Back when I was first programming telephone exchanges, the US standards were set by BellCore and the European standards by the CCCIT, which was renamed as the IT-U.
Those covered ISDN & ISUP, then, later GSM, and GPRS.
Analog(ue) technology was considered ...
Unfortunately this is not a complete answer, I will update it if I get more information. As for now, based on the Sigfox AT command descriptions.
AT$SB=bit[.bit] Send a Bit Status (0 or 1).
to send payload data or frame of size 1 to 12 bytes. For example:
SB means Status Bit message
SF means Sigfox ...
This is rather a simplification, but the basic answer is channel capacity. The whole HF band is the width of a single GHz channel, and the VHF band is the width of the 2.4 GHz band. This means bandwidth at the HF/VHF bands is in very short supply.
Granted, there are some available bands, but they are so narrow as to only suit very low bandwidth. They tend ...
Be aware that with LoRaWAN (and others ISM technologies), you have to follow the local regulation about duty cycle as you will use ISM radio band.
If you are at a distance of around 5km, you may need to use a large spreading factor meaning you will spread the data on air, and so use more airtime.
In Europe, you have (basically) 1% of air time allow. See ...
I did a case study on LoRaWAN in 2015. Since then the community is continuously growing. The case study was about installing one Gateway in our city.
I find it one of the best solution because
Low power consumption (As a node reports to Gateway, 3 AAA batteries lasts for more than a month)
Low cost devices (The Things Uno)
Long range wireless network (Up ...