User Manual

Reference Information
50
Reference Information
EFR encoding decoder function
The J9
（
GSM/DCS
）
is equipped with the latest
encoding decoder and audio frequency technology,
to achieve superior audio quality.
At present, there are 3 types of encoding decoder
compatible with GSM/DCS:
yEnhance full rate （EFR）
yFull rate （FR）
yHalf rate （HR）
The J9 (GSM/DCS) mobile phone supports the
normally used EFR and FR encoding decoder.
All GSM and DCS cellular networks and phones
support FR encoding decoder.
If supported by the network operator, the network
operator will automatically select the relevant
encoding decoder, which will be either EFR or FR.
The J9 model is programmed to automatically select
the EFR where this is supported by the network,
allowing you to enjoy the superior audio quality
provided by EFR. Otherwise the phone will select
FR.
At present, only some networks support both the FR
and EFR encoding decoder.
If the network operator cannot support EFR, the J9
(GSM/DCS) mobile phone will automatically adopt
the FR encoding decoder.
Accessories
The accessories for the J9 model (GSM/DCS)
mobile phone include battery, charger etc. Please
refer to “Battery charging” for the battery charging
method.
Battery
At present, the rechargeable battery approved by
the manufacturer is the lithium battery (LI-ION).
The talk time and standby time for a new battery is
about 2–3 hours and 50-150 hours respectively.
When the battery is fully charged, you can have a
continuous talk time for a few hours and standby
time for a few days. The capacity of a battery may
vary depending on the environment, networks, SIM
card or options available.
Charger
This is a lightweight charger compatible with a
multi-voltage supply. Do not connect it to an
incompatible product. It charges the phone battery
rapidly. To start charging, plug the charger into a
power supply and insert the other end into the
charge port at the bottom of your phone.
The required charging time is approximately 5 hours.
The battery charging status can be checked on the
mobile phone display.