networks and secret codes woes

[bereft]

Greetings droiders,
It all started when, suddenly, my network changed
from H to E (what the hell is that anyway). So I
googled and did all the things I found there to no
avail. Then I came across this app called "Android Secret
Codes" which has worsened my situation. You see,
There's this code *#*#4636#*#* by which you can
supposedly change your network. As this code wasn't
working, and as I'm new to these so-called 'smartphones',
I tried another one: *#0*#. After executing it, I don't know
what happened but now there's this left-pointing white
coloured draggable arrow which refuses to go away.
That's it. That's my problem. I'm using Samsung galaxy
win (Duos) GT I8552. Please help and remember, I'm
not a techie.
Thanks.

 

[Rush]

Welcome aboard.

It seems as if something went wrong -- Do a full reset on the the phone. Hopefully this should fix all the problems you are having.

Good luck.

 

[bereft]

Welcome aboard.

It seems as if something went wrong -- Do a full reset on the the phone. Hopefully this should fix all the problems you are having.

Good luck.

Hi Rush,
Thanks for the reply but could you please
provide an alternate? Because for me
(being a tyro), even something like 'reset'
seems like an esoteric doctrine. And if that's
not possible, could you please provide a step-
by-step for dunderheads?
Thanks man, do me this solid, eh?