I recently got a new Galaxy S5. I am getting a bad signal with it compared to my old S3. In the exact same spot my old S3 would get 4 bars this new S5 gets 2. The dbm on the S3 is usually around 89 or less. The S5 is usually 105 or higher.
My friend has a Note3. He is getting 4 bars sitting next to my S5, and its getting 2.