Cell phone jammer can work more efficiently

Time of purchase, price, after-sale maintenance services must be considered. Also, the necessary tests. Check keypad, battery, to prevent the keys not working, battery change was stolen. If the battery color and the color of the body shell are the same, if the color and the body do not match, there will most likely not the original battery. First of all, do not believe in advertising, their own pick. The ads are always exaggerated, with some of the parameters is not clearly known to dig a trap to make you jump. Control instructions, the function must be clear. When buying cell phones, there are some optional skills: phone cumulative talk time, if not zero, it is possible that the two mobile phones or repairing machines; look at the serial number of the fuselage, the nose back stickers and packaging string The numbers are consistent. And then the shielding of  cell phone jammer  has been achieved.
If the phone is original to the site of authentic products. Carefully check the body to see if there are no scratches or other obvious Removable traces. Ask whether the phone into the network license, if there is no network access license, or false, should be reported to the business sector. Check the rise in the cover of the chapter on the invoice on the cover of the chapter with the "Three Guarantees" certificate and invoice seal, and take good care of invoices and the "three guarantees" certificate. What is the phone three packs. Many consumers simply do not know the phone three packs, and some people only know the refund, replacement, repair, and other content almost nothing. Such as: the content of the three packs includes not only mobile phones, including batteries and accessories and gifts.  cell phone jammer will be in the detecting status.
So how can we enjoy the three bags of it? Below I give you some comments. Warranty valid: the commitment to three packs of the obligation of the period, beginning from the date of issuance of invoice to the provisions of the implementation of the three packs of mobile phone catalog, or agreed with the consumer three packs of the expiration date (including day) only. If the guarantee period the last day of statutory holidays, statutory holiday, the next day for three packs of validity deadline. If the warranty period, the occurrence of product repair or waiting for repair without spare parts, three packs of the validity period should be coupled repair takes time and wait for the parts occupied by the time of the original Warranty valid. The power consumption of  cell phone jammer will be reduced.
The refunding of the three packs: three packs to provide for refunding the purchase of mobile phones within seven days. Phone in the aftermarket seven Japan-China retreat in the following circumstances: no display screen, typos, missing program can not boot, not the normal login or communications, no ringing, dialing error, non-normal shutdown, the SIM card poor contact button control failure. no noise, unidirectional sound or volume is not normal, or other instructions listed to be disabled; or shell dehiscence performance problems. But the refunding, the use of mobile phones need a certain amount of depreciation charges. The replacement of the three packs: after-sale on the 8th to 15 days, appeal failure, consumers can choose replacement or repair. The same model are interchangeable with the specifications of goods such as business, consumers can return. The design of  cell phone jammer  conforms to the requirements.
After replacement, three bags of validity should be recalculated to seal the back of the invoice, indicating the replacement date, and provide new Three Guarantees certificate. If the battery, charger, mobile terminal card, an external wired headset, data interface cards and accessories such as a failure of performance, the same can be replaced, such as replacement of two still is not working, can return. If the attachment be purchased separately, according to invoices once the money returned. Three packs of repair kits: the purchase date, three packs are valid for one year warranty. Mobile phone businesses in 7 days can not fix the fault, should be free to provide customers with a backup machine. More than 60 days is not repaired by the repairer to provide repair records in the invoices and the Three Guarantees certificate, you can request a replacement. When   phone jammer shields the signal of user inside the application place.