Yeah, additionally you can place the device where signal strength is strongest.
To find a place where signal strength is strongest, you can also check signal strength from smartphones.
Settings > About device > Status > Signal strength (ASU) and Mobile network type.
Higher ASU = higher signal strength.
The signal bars just give an approximate idea of signal strength which is not always very accurate.
*Note:2G/3G and 4G have their own signal strengths. So it is always worth noting 'mobile network type' too. Test with mobile data on.
The screenshot attached shows 44 ASU signal strength on LTE network.
