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Level 2: Rookie

OPPO A73 can't make calls or receive calls

Answered

Hi there,

I have a bought a brand new OPPO A73 and I am disappointed to as to see that I can only send texts and browse internet but can't make calls. 

 

I am using Belong SIM which is Telstra's sister concern, I believe.

 

I am shocked that I can t make calls with my new phone. 

 

Hafiz

1 ACCEPTED SOLUTION

Accepted Solutions
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Level 2: Rookie
Accepted Solution

Re: OPPO A73 can't make calls or receive calls

Hi @Yastiandrie,

Thanks for suggestion.

It is fixed in the following way:
1. Install "MTK Engineer" app from google play store.
2. Open "MTK Engineer" and choose "Telephony"
3. Choose "Bandmode" and tick the box for "GSM850" under GSM and tick WCDMA (3G)
4. Press "Set" button that appears at the bottom
I can now make and receive calls.

Thanks guys for your comment

View solution in original post

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6 REPLIES 6
Level 25: The Singularity
Level 25: The Singularity

Re: OPPO A73 can't make calls or receive calls

Where did you buy it from?
Never be afraid to back yourself when trying new things, just always make sure you have 3 escape routes if things go wrong.
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Level 2: Rookie
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Level 24: Supreme Being
Level 24: Supreme Being

Re: OPPO A73 can't make calls or receive calls

"This phone is unlocked to all network except Telstra NETWORK". I'm assuming this means it won't work on the 850mhz 3G band

More than likely it won't work on Belong, Aldi, Boost, and Woolworths mobile as they all use Telstra's wholesale mobile network

You may be able to unlock band 5 but it wouldn't be a given, and there is always a chance that you brick the phone: https://forums.whirlpool.net.au/archive/2705912
I am Complex Customer Service Specialist, nominally working with most assurance products. However, I am not an official representative on CrowdSupport.

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Level 25: The Singularity
Level 25: The Singularity

Re: OPPO A73 can't make calls or receive calls

It was most likely purchased through Optus' wholesales channels which means it has a version of the firmware that blocks the use of the 850MHz UMTS band that is essential for this phone to be able to be used properly on the Telstra network (as it can't use the VoLTE system).

As @Yastiandrie has pointed out, if you try to get it loaded with a universal firmware that allows the use of all the Bands, then you run the risk of Bricking the phone.
Never be afraid to back yourself when trying new things, just always make sure you have 3 escape routes if things go wrong.
Highlighted
Level 2: Rookie
Accepted Solution

Re: OPPO A73 can't make calls or receive calls

Hi @Yastiandrie,

Thanks for suggestion.

It is fixed in the following way:
1. Install "MTK Engineer" app from google play store.
2. Open "MTK Engineer" and choose "Telephony"
3. Choose "Bandmode" and tick the box for "GSM850" under GSM and tick WCDMA (3G)
4. Press "Set" button that appears at the bottom
I can now make and receive calls.

Thanks guys for your comment

View solution in original post

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Telstra (Retired)
Telstra (Retired)

Re: OPPO A73 can't make calls or receive calls

Hey hafiz1,

 

Thanks for the update and glad that the information that has been provided by Yastiandrie has been successful Smiley Happy

 

If what has been provided has resolved the issue, then please have this accepted as a solution and remember to give Kudos when applicable.

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