Do you want a better distribution of the signal in multiple rooms or different floors then placing more indoor antennas is possible.
with strap(on) do we mean 2G, 3G, 4G of 5G.
A multi-band amplifier can 2 until 5 strengthen ties.
- 2G + 3G | Voice and data connections.
- 2G + 3G + 4G + 5G| HD Speech and higher data speed connections.
How many bars do you see on your phone when you are outside buiten.
Use an App like Signal Analyzer or Network info Signal to read the signal in -dBm. The lower value is -110 dBm bad signal up to -55 dBm perfect signal.