Hello. 1G-4G is really one technology all together compared with 5G.
5G is something completely different since it is EVERYTHING the other generations of networks are not: 5G can look through walls and under ground, it can be used for everything from mind-control of an individual to crowd control of the masses. 5G will generate a direct beam from the source to your device in order for the "fast download" to be possible. If you stand in the middle of this, you will get a VERY high and VERY DEADLY dose of radiation. My point is: You can not just measure 5G like the rest, if you really want to get a proper reading you will have to get right into the beam.
I haven't used a detector myself so I can not tell you the best one for the price - to be honest, I don't trust these tests at all, not the COVID19 test or a certified radiation reader, but here are a few examples for you:
https://www.ebay.co.uk/itm/5G-4G-EMF-RA ... 3072404374
5G IS the virus - Something for you to KNOW about....
5G - patented mass murder democide
5G - patented mass murder democide 2 (deleted by youtube)
Shareware/bannedyoutube/5G-patented_mas ... cide_2.mp4
5G burn ozone and will remove our atmosphere
It is your DUTY to help take down 5G and face scanning masts
Microwaves as military mindcontrol
your government wants you dead