Cases Take care of your phone - to keep it running well and out of the shop. You can't call colleagues or family members if your phone is damaged due to physical problems such as cracked displays or non-working keys. And these cases let you maximize the use of your phone, because you can use them in any location without worrying about dirt, sweat and other material affecting their performance or condition. The quality of your antenna plays a big role in the quality of your phone's reception. But even without adding those products, you can improve your reception inside your vehicle by keeping the antenna vertical and as high as possible so the signal is not impaired by the metal in the vehicle.
Different people have different antenna requirements.
Cellular was originally designed for 3dB gain antennas as they provide the optimal combination of vertical and horizontal patterns. 5dB antennas are the best for flat areas because their pattern is primarily horizontal Another important fact is that you can't use any antenna with any phone. You can generally pick your best antenna for an installed phone, and usually for a transportable phone. That is also true with portables for which you have installation kit. However, not all portable phones can connect to an extra antenna.