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Sony Ericsson J300

Sony Ericsson J300
128 x 128 pixels
MEMORY: 0.012 GB
Announced: Mar 1, 2005
Market status: Released
Features: Fingerprint Lightweight Thin LTE Rugged NFC Dual SIM

US carrier availability

Discontinued: CellularOne / Dobson


No pros


  • No rear camera
  • Lacks microSD slot for storage expansion
  • It is so thick it needs a personal fitness trainer (0.70 inches inches)
  • Lacks an ambient light sensor for automatic screen brightness adjustment




Sony Ericsson J300 is an entry level dual-band GSM phone. It sports 65k color TFT display, WAP 2.0 Internet browser, 12 MB shared memory, SMS/EMS/MMS/IM support, 3D Java games and built-in Speakerphone.

Do you ...?



  • Dimensions:
    • 3.90 x 1.70 x 0.70 inches (99.1 x 42.6 x 18.2 mm)
  • Weight:
    • 2.80 oz (78 g)
      the average is 5.2 oz (150 g)
  • Features:
    • Numeric keypad, Exchangable faceplates


  • Resolution:
    • 128 x 128 pixels
  • Technology:

    Technology - There are two main screen technologies currently used in phones and tablets: LCD and AMOLED. The former usually features a light source and liquid crystals, while the latter is based on organic light-emitting diodes. Newer LCD variations like IPS-LCD and Super-LCD allow for very accurate color reproduction and very wide viewing angles, where no significant image quality loss is observed. Current AMOLED screens differ in such a way that they can exhibit much more saturated colors (sometimes too much) and incredibly high contrast levels, which is due to black color being completely black in AMOLED displays.

    • TFT


  • Built-in storage:
    • 0.012 GB


  • Type:
    • User replaceable, Li - Ion
  • Talk time:
    • 7.00 hours
      the average is 15 h (880 min)
  • Stand-by time:
    • 12.5 days (300 hours)
      the average is 16 days (375 h)


  • GSM:
    • 850, 1900 MHz

Phone features

  • Notifications:
    • Polyphonic ringtones (40 voices), Vibration, Speakerphone
  • Other features:
    • Voice recording


  • USB:
      • Yes
  • Other:
    • Computer sync, SyncML


  • Officially announced:
    • 01 Mar 2005
specifications continue after the ad

Regulatory Approval

  • FCC approval:

    FCC approval - The Federal Communications Commission (FCC) is an independent United States government agency, directly responsible to Congress. The FCC was established by the Communications Act of 1934 and is charged with regulating interstate and international communications by radio, television, wire, satellite and cable. The FCC's jurisdiction covers the 50 states, the District of Columbia, and U.S. possessions. Every wireless phone device that is sold in the U.S. has to be tested and approved for sale by the FCC.

    • Date approved:

      Date approved - Shows the date when the particular phone is approved by the Federal Communications Commission

      • 30 Jun 2005
      • FCC ID value:

        FCC ID value - Shows the FCC Identifying value of the particular phone

        PY7A1041021 link
  • FCC measured SAR:

    FCC measured SAR - Working closely with federal health and safety agencies, such as the Food and Drug Administration (FDA), the FCC has adopted limits for safe exposure to radiofrequency (RF) energy. These limits are given in terms of a unit referred to as the Specific Absorption Rate (SAR), which is a measure of the amount of radio frequency energy absorbed by the body when using a mobile phone. The FCC requires cell phone manufacturers to ensure that their phones comply with these objective limits for safe exposure. Any cell phone at or below these SAR levels (that is, any phone legally sold in the U.S.) is a "safe" phone, as measured by these standards. The FCC limit for public exposure from cellular telephones is an SAR level of 1.6 watts per kilogram (1.6 W/kg).

    • Head:
      • 0.88 W/kg
    • Measured in:
      • 1900 MHz
    • Body:
      • 1.02 W/kg
    • Measured in:
      • 1900 MHz

To see the full specifications with in-depth details click here.

Despite our efforts to provide full and correct Sony Ericsson J300 specifications, there is always a possibility of making a mistake. If you see any wrong or incomplete data, please LET US KNOW.

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