Signal problem unstable sometimes can vertiginous us when we have to which is important. Signal problem caused by 2 matters that is, Signal quality from weak operator BTS and handphone condition, maybe has problem. If BTS's signal doesn't has problem. So, Problem that happened caused by handphone.
Handphone which have signal problem, has 2 possibilities too. The problem from software or Hardware. First step that must be done software repair with tuning signal. If having taken tuning signal, still have problem. So latest step does change in component switch antenna, IC RF, PA, Audio and more related to the weak handphone signal.
If weak antenna switch, but hasn't be changed. If fund is very limited,We can do jumper switch antenna without replaced PA's IC.
Device that must be prepared:
- Solder and tin 0,3 mm
- Flux's liquid
- Cable jumper 0,3 mm
Steps that must be done:
- Discharging the casing until only PCB/Board only
- Preparing jumper cable and then banded it in appropriate points likes the picture, Precisely at IC cable PA
- At the picture, We jumper handphone with 33XX types
- Having taken jumper, Rearrange handphone parts.
- Handphone can used with better signal.
This trick will influence ability on dual band handphone be one band, That is 900 MHzs. This Trick is very helpfull if we have limited on budget. If we doesn't want to lose handphone ability dual band, So cheng the IC PA's.