So, been having a discussion with a family member over a signal booster he wants to get to 'improve' signal around the house.

I know there are other threads on this awhile back, but just looking for fresh details and moreso directly on the product as i have already had a few discussions over why i think its a bad idea.

The booster in question would be looking at something between a 300~700m range, http://www.mobilephonesignalbooster.co.nz/product/tri-band-mobile-repeaters-all-networks-3g-300sqm/ like so.


Now, its my understanding that atlest for Vodafone, such a product is not allowed Is this still the case?, and only 'certified' products are allowed for spark/2D is this actually a certified product or not?


Reasons for wanting to do this is simply, signal is 'bad'
- VF 2G is noticeably worse than 3G, anyone coming into the house expecting 2G to work wherever they are is pushing their luck.
- VF overall i personally would say reasonable, sitting at my desk ill sit in 1~3 bars most days (4~8mbit speedtests), moving out into the main part of the house ill get 3~5 bars (20~30mbit speedtest). if you would prefer signal levels ill provide them too.
- Spark unless you hold stand on your toes and do a twirl, good luck getting anything of use -> family member has recently changed jobs and had his work phone switched to Spark unfortunately.


Being that it works on 850/1800/2100 i would assume 'boosted' potential would be

Vodafone
-2G 1800mhz (pretty sure its 900mhz we get out here - if anyone knows of a app that actually indicates this, ild love to have a play)
-3G 2100mhz (once again, pretty sure its the 'extended' 900mhz mainly seen here)

So i would assume for 2G its likely not much of an 'advantage' at all.

2Degress would be much the same.

Spark
-850mhz 3G (dont see it being likely that their 2100 would be seen out here)

Given that signal is actually pretty reasonable aside from Spark, Would there not be a pretty likely potential for Interference from a booster like this..