The Anti-Radiation Cover blocks 99 percent of radiation emitted from phone's earpiece
Simple to install, Just attach it to phone earpiece
Protects soft tissues of ear ducts
Does not affect sound quality
Universally compatible / Works with any phone.

Specal Report :
On August 1st, 1996, the FCC adopted standards regulating the amount of radiation from cellular phones. But even in the standards proceedings, 'the FDA cites recent studies indicating that cellular telephones can exceed limits for SAR', FCC 96-326. SAR (Specific Absorption Rate) is a standard measure of radiation hazard. P.F cover conducted its own testing and found radiation especially around the ear piece of many popular cell phones.
_________Internal Antenna Booster:
The Internal Antenna Booster works with Nokia, Motorola, Ericsson, Nextel, Qualcomm & all the other major brands.
The Internal Antenna Booster is a passive device designed to capture stray radiation in the body of the phone and re-radiate the signal to improve the phone's performance.
The Internal Antenna Booster will work most efficiently when installed properly.
When using the phone try to avoid placing your hand over the area where the Internal Antenna Booster is installed. (Stick it in between the battery and the phone)
At 1.75 x 1 inches, Internal Antenna fits digital, analog and tri-band phones.
If your cell-phone battery compartment is smaller, we do not advise using this product. (limited battery space will not bring the full 100% usage of this intenna)
Not compatible with Nextel i500/ i800 series cellphones due to the size of the batteries.
Internal Antenna does not enhances signal that does not already exist in the area, so in other word, Internal Antenna cannot bring in a signal where there is none.

Internal Antenna Booster Installation Instructions:

Turn off your phone.
Remove cell phone battery.
Before removing the adhesive backing from the internal antenna booster, decide where you are going to place the antenna. Be sure not to cover the battery or phone copper contacts and make sure that the "Side Up" portion of the antenna is pointing towards the antenna on your phone.
Remove backing from the self-adhesive backing and attach it to the phone or battery
Note: the internal antenna booster goes between the battery and the phone
Replace battery and turn your cell phone on.
Enjoy the reduced static and enhanced signal on your cellular phone!!