.
It's odd that news reports and the U Mobile website seem to have conflicting information about its 2G RAN Sharing, ie is it with Maxis or with Celcom.? .......
"When U Mobile was first launched in 2007, they had relied on Celcom for 2G domestic roaming for nationwide coverage before they switched to Maxis in 2012. ...
UPDATE 2: U Mobile will still continue 2G Domestic Roaming with Maxis. This is to provide a wider coverage for basic calls and SMS." https://soyacincau.com/2017/06/28/u-mobiles...ll-end-in-2018/ - U Mobile’s RAN share agreement with Maxis will end in 2018 - By Alexander Wong 4:37 pm, 28 June 2017
"Will there be any MMS settings for customer to change? As we know we are riding on Celcom 2G and MMS setting would be a separate settings. Do they need to configure it separately? = No. " https://www.u.com.my/business/support/selfhelp/faqs/73/725Maybe U Mobile has just changed it's 2G RAN Sharing from Maxis to Celcom.
Can anyone else confirm that U Mobile is RAN sharing 2G from Celcom and not Maxis, ie for basic voice calls and SMS only, ie not for 4G LTE Internet data.?
.
P S - When all the celcos sunset 3G at the end of this year, 2G and 2G RAN Sharing will be the fall-back for basic voice calls and SMS. This fall-back is needed because 4G LTE Internet data signal (for Internet, VoLTE and IMS) has a max range(= max power setting of the cell tower) of only 5km/3 miles(usually it's effective range is 1km only) whereas 2G voice calls/SMS has a max range of 32km/20 miles, eg for calling emergency services like 999 in non-urban areas.
P P S - If the range of 4G cell towers is 1km, they can be spaced 2km apart for full map coverage, especially in rural areas. Each 4G cell tower can serve about 500 users at any one time. In urban areas, 4G cell towers are often spaced about 800m apart or less because of too many users. So, in urban areas, 2G voice calls/SMS are often not needed as a fall-back, eg for calling emergency services like 999.
.
If i not mistaken. My in law house, the coverage for all telco also like crap. U Mobile is the worst where it will fall to 2G which the phone shows CELCOM EDGE. I think is Celcom for 2G. By the way. I got suprised that UMobile network team seems responsive where i complaint that my in law house area in particular area has weak 3G n 4G coverage. Closest to get coverage is 1km apart. Ysdty i got shock my phone show full 4G signal even in the house where last week is poor. 😱 not sure they really solve it or what. I would say good job.