Wednesday, October 10, 2007
which is better? post paid or pre paid
if your still considering what kind of billing plan you want to have these are some cons and pro of post paid and pre paid
this will give you or at least remind you of what you are getting
if you dont know which one to choose
this are the basics that will guide you in choosing your network and cap plan
whats available
value for money
first at your network
coverage
no extra fee for local roaming
good support (customer service)
your plan
depending on what you can affor and what you really want
I reccomend value for money
arent you sure of buying a cellphone that will fit you?
theres a lot of factors...it depends on your needs, lifestyle and of course whats available for your budget
of course i recommend the most efficient model.
first its within your budget range
what do you really need
extra to price ratio
cellphone capabilities
what do you really need
timer calendar alarm
to do list
txt messaging
call
additional
video
camera
radio
voice recorder
gps
connection
internet
3G capable
storage micro mini sd mmc
connection usb connection infrared bluetooth wireless 802.1 abg
proof weatherproof splashproof waterproof shockproof
this is actually a common sense
i just want to add some topics about cellphones.
battery
charging
lcd
additional casing
avoid dropping it
chain it to yourself
is it worth buying a water proof, splash proof, shock proof, weather proof cell phones or mobile phones?
0 comments Posted by linnaeus14 at 08:27b4 i was thinking of buying a splash or waterproof shockproof and weatherproof cellphone
but because of the price...it gave me a second thought....is it worthy?
why should we buy them?
lifestyle. if you have a rugged lifestyle like what i have (sports/outdoor
recreation..great challlenges.whatever) i would say that it fits the occasion..
unique. yeah because not all mobile phones have the same capabilities and resistance to weather..
durable. well if it got more resistance...then it is likely to have more life.
trend. not really because it is not that popular and not everyone use it.
compare a cellphone with the same capabalities 5140
price?
unique casing design and material...
i think all mobile phones or cellphones are designed to be water proof and splash proof thats why most of the time you can still save your mobile phone if it get wet
maybe cellphones have fuses or circuit breakers to reduce the damage of short circuit.
Nowadays batteries are designed to be compact and waterproof to avoid short circuit.
Conclusion
eversince, these two dont have a good relationship
water can cause a short circuit to any electronics..how?
pure water is not a conductor but in our community there is no such thing as 100% pure water...maybe 99.99% pure but that 0.01% may cause it to become a conductor...how?
we know that water is a universal solvent because it can almost dissolved everything...if that 0.01% is an ionic compound(i.e. salt (NaCL)) and is dissolved in water..it will break into (Na+ and CL-)
this will cause the charged ions to move( Na+....same thing to metals because they have +charged ions)...well moving charge is electricity...simple
now lets go to electronics...lets say your cellphone...
if youve seen a computer chip..you can notice a lot of thin copper lines(conductor) embedded in a green silicon (semiconductor) in an orderly fashion...
well if water gets into your cellphone...since these chips are well compacted.. too small ... because of the surface tension of the water ,or the water may not have enough force to get contact with the copper lines...most probably short circuit will not happen.
so where does it occur in a cellphone?well the first one to get contact with water.... maybe at the microphone...speaker?hmmm....most probably in the power source.....battery...because it is exposed and simply because its where charge are stored.
if water get into the battery...and if water is a conductor....it may direct the flow of charge into any direction...if that happens... a lot of current may only pass into one path causing overload....and if that path dont have enough resistance.... heat will build up....and boom short cicuit...