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General| Brand | Estar |
|---|---|
| Model | A28 DUAL SIM |
| Category | Cell Phone |
| Language | English |
Provides crucial safety warnings and precautions for using the mobile phone.
Details SAR values for GSM 900 and GSM 1800 frequency bands and EU limits.
Step-by-step guide on how to install SIM cards and the battery.
Guidance on how to charge the device, including initial charging recommendations.
Instructions on how to make calls, including dialing numbers and calling contacts.
How to answer or reject incoming calls using the phone's keys.
Configuration options for call settings, including dual-SIM and call forwarding.
Options for call forwarding, call waiting, and hiding caller ID.
Settings related to date, time, language, and power management.
Covers PIN, passwords, phone locking, privacy, auto keypad lock, and blacklist.
Instructions for playing audio files, MP3 songs, and managing playlists.
Troubleshooting steps for network connectivity issues, including invalid SIM and weak signal.
Troubleshooting steps for battery charging problems, such as improper charger or poor contact.
Details the risks associated with improper handling, damage, or disposal of the product.
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