What is GSM?
Will my phone work on Guam?
What is SMS?
What is MMS?
How do I send a local SMS?
How do I send a International
SMS?
What is Roaming?
I am a HafaTEL Subscriber.
Can I roam?
Can I roam on HafaTEL's
Network?
How
can I recharge my balance if I am a prepaid
subscriber?
How
can I check my balance if I am a prepaid
subscriber?
What
locations can I find prepaid refresh cards?
What is a Tri-Band Phone?
What is a Dual Band Phone?
What is USSD?
How do I sign up for WEB
SMS?
How do I send
a SMS to a friend from WEB SMS?
How
do I check how many remaining credits I
have on WEB SMS?
What is GPRS?
Please note that if your topic is not covered
in this section you may email
your question to
support@guamwireless.com
What is GSM? Top
GSM (originally "Groupe de travail Spéciale
pour les services Mobiles".) Global Systems
for Mobile Communications. Originally used
mainly in Europe, has now spread worldwide
to become the most widely used mobile technology
in today's world. GSM is now used by over
70% of worldwide mobile subscribers and
still growing.
Will my
phone work on Guam? Top
This is a tricky question. HafaTEL
uses GSM in the 1900 MHz PCS spectrum.
All GSM phones that work in the US should
work on Guam unless the phone has been carrier
locked by the original network. Also
if your phone is a GSM Tri-Band (900/1800/1900)
or Quad-Band phone it should work with HafaTEL.
GSM Dual band phones will not work on Guam.
What is SMS? Top
Short Message Service A text message service
that enables short messages of generally
no more than 140-160 characters in length
to be sent and transmitted from a cell phone.
SMS was introduced in the GSM system and
later supported by all other digital-based
mobile communications systems. Unlike paging,
but similar to e-mail, short messages are
stored and forwarded at SMS centers, which
means you can retrieve your messages later
if you are not immediately available to
receive them. SMS messages travel to the
cell phone over the system's control channel,
which is separate and apart from the voice
channel. Some phones may also support
what is know as concatenated SMS which allows
for larger messages to be sent. Please
check with your phone manual if this is
supported.
What is MMS? Top
Multimedia Messaging Service New type of
messaging within mobile networks that extends
SMS but and actually very much like email.
MMS messages can be seen as "slide shows"
where each slide consists of text, a picture
and an audio object. To support MMS networks
will need to integrate new infrastructure
elements. End users will need to have mobile
phones that support MMS (I.e. have an MMS
User Agent) MMS is defined by 3GPP and the
WAP Forum.
What is Roaming? Top
Using a wireless phone outside of your service
provider's local coverage area or home calling
area is referred to as roaming. Roaming
arrangements between service providers expand
the potential area for phone use. Service
providers typically charge a higher per-minute
fee for calls placed outside their home
calling or coverage area. Roaming within
your home network, this means that your
mobile phone automatically sets up communication
procedures with different radio base stations
when on the move. International roaming
means that you can use networks other than
your own
when traveling abroad.
How
can I recharge my balance if I am a prepaid
subscriber? Top
First, make sure the card is not expired.
HafaTEL subscribers can recharge their balance
by following one of two methods.
Method 1:Voice Interactive
Step 1:Dial 555 wait for
the message to complete.
Step 2:Enter the scratch
card PIN.
Step 3:After the recording
press 1 on your keypad to apply balance.
Step 4:A message will play
with your updated balance.
Method 2:USSD Single Stage TOP-UP
Step 1:Send a USSD message
to *111*CARDPINNUMBER# - (Press SEND)
Step 2:A message will come
back with your updated balance.
How
can I check my balance if I am a prepaid
subscriber? Top
HafaTEL subscribers can check their balance
by following one of the two following methods.
Method 1: Dial from your handset 888 and
listen to the recording.
Method 2: Send a USSD message to *112*#
- (Press Send)
What
locations can I find prepaid refresh cards?
Top
A list of available locations may be found
by following this link.
What is a Tri-Band Phone?
Top
A Tri-Band phone is one that works in 900,
1800, and 1900 MHz frequencies.
This is the preferred phone for the astute
traveler.
What is a Dual Band Phone?
Top
A Dual Band phone works only in the 900
and 1800 MHz frequencies and will not work
on Guam.
What is USSD? Top
Unstructured Supplementary Services Data USSD
is a means of transmitting information or
instructions over a GSM network. USSD has
some similarities with SMS since both use
the GSM network's signaling path. Unlike SMS,
USSD is not a store and forward service and
is session-oriented such that when a user
accesses a USSD service, a session is established
and the radio connection stays open until
the user, application, or time out releases
it. This has more in common with Data than
SMS. USSD text messages can be up to 182 characters
in length.
How do I sign up for WEB
SMS? Top
To sign up for WEB SMS follow this link.
How do I send
a SMS to a friend from WEB SMS? Top
To send a SMS from WEB SMS to a friend please
enter in the "Number" field the full 11
digit number and then add the Pass Phrase.
How
do I check how many remaining credits I
have on WEB SMS? Top
To check your remaining credits send a blank
SMS to 4225. You will then shortly
receive a SMS with your current credits
total.
What is GPRS? Top
A radio technology called General Packet
Radio Service for GSM networks. It incorporates
packet-switching protocols, has shorter
set-up time for ISP connections, and offers
the possibility to charge by amount of data
sent rather than connect time. It is designed
to support flexible data transmission rates
typically up to 20 or 30 Kbps (with a theoretical
maximum of 171.2 Kbps), as well as continuous
connection to the network.
How do I send
a International SMS? Top
To send an international SMS use +CountryCode
instead of 011CountryCode. For Example +63917000000000
would work where as 01163917000000000 would
not.
Can I roam on HafaTEL's
Network? Top
Yes, HafaTEL offers roaming to many international
and US carriers. Please check this link
for our list of roaming partners.
I
am a HafaTEL Subscriber. Can I roam?
Top
HafaTEL is working at this time with international
carriers to allow our LocoTalk Postpaid
subscribers to roam. Please check
this list
for which carriers are soon to be available.
How do I send a local SMS?
Top
To send a local SMS please use the full
11 digit HafaTEL number.
Example: +1671788XXXX (Where X = 0 - 9)
This will ensure accurate delivery.
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