Imho, although your phone will not give a true strength of signal, use your phone to indicate if you have a 4g signal - outside your house, not inside as I'm not a fan on skimping on an antenna.
External antenna will give better reception compared to internal signal strength, especially if you have thick walls.
Make sure the phone is actually showing 4g, not 3g, then use the map to get direction of the appropriate mast.
Then you buy a directional map vs omni directional, as you get better reception in my experience, and you can then chose an appropriate place for the mounting of the antenna and pole.
Remember though - 5 mtr distance is deemed the max distance you want from the router to antenna, and the supplied cables are normally that length.
External antenna will give better reception compared to internal signal strength, especially if you have thick walls.
Make sure the phone is actually showing 4g, not 3g, then use the map to get direction of the appropriate mast.
Then you buy a directional map vs omni directional, as you get better reception in my experience, and you can then chose an appropriate place for the mounting of the antenna and pole.
Remember though - 5 mtr distance is deemed the max distance you want from the router to antenna, and the supplied cables are normally that length.