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USSD CODES FOR ALL MOBILE NETWORKS

USSD Codes for all Mobile Networks we all should be aware of:

Airtel USSD Codes :-

Airtel Gift Service – *141#
Mobile Office Activate or Deactivation – *567# 602 more words

Daily_Katta

DOCOMO brings FIDO biometric authentication to iOS users

The FIDO® Alliance, the cross-industry creators of open standards for simpler, stronger authentication, announced today that Japan’s largest mobile network operator NTT DOCOMO, INC. (“DOCOMO”) has extended its deployment of FIDO® Certified strong authentication to its millions of customers with Touch ID®-equipped Apple iPhones and other iOS devices. 335 more words

Featured

LTE MIMO Antennas Analysis

即將進入無線通訊5G的時代,為了提升傳輸速率,手機LTE也開始建立MIMO的技術,新版的CTIA已經將MIMO的測試納入規範,尤其是要賣到日本電信龍頭Docomo的手機,已經要求要測試MIMO的性能。
MIMO的測試,CTIA有定義MIMO的天線治具,這邊挑了LTE Band-13的頻帶,去將模擬及實測量測的結果,一窺有關MIMO的測試及特性。

B-13 Reference Antennas from CTIA
下圖是整理在Band-13的MIMO的天線治具,採用雙天線達到MIMO效果,CTIA定義了Band-13有三大類MIMO天線。

好的MIMO天線要符合
1.低相關係數,要小於0.1
2.高輻射效率,要大於90%
3.低增益差值,也就是兩隻天線的輻射增益的差值,要小於0dB

一般的MIMO天線要符合
1.普通的相關係數,小於0.5
2.普通的輻射效率,大於50%即可
3.低增益差值,也就是兩隻天線的輻射增益的差值,要小於0dB

差的MIMO天線要符合
1.低的相關係數,大於0.9即可
2.低的輻射效率,小於50%即可
3.低增益差值,也就是兩隻天線的輻射增益的差值,要小於0dB

Reference Antenna Simulation Setting… 95 more words

Antenna

"Akhirnya aku memilihmu" - sekelumit kontrak HP di Jepang

*awalnya tadi cuma mau pake judul yg di quote aja, tapi terlalu kontroversial kayaknya..hahaha

Disclaimer: Saya tidak terasosiasi dengan operator manapun, bukan agen juga, semua murni pengalaman pribadi. 1,364 more words

Experience

Japanese cell phone provider gives same-sex couples with Partnership Certificates family discount

Cell phone service in Japan isn’t exactly cheap, and if you spend a lot of time on your smartphone talking with clients, chatting with friends, or otherwise keeping in touch with the rest of the world, it’s not hard to run up a monthly bill in the neighborhood of 10,000 yen (US$84). 363 more words

Japan