Silverlocks

It seems to be working fine - the shot is nice and you can see the detail well.  Axial shots will pick out the detail but tend to flatten out the lustre of the coin. 
Some things for OP to contemplate:
Get a grey card (a few quid on Amazon) and figure out how to lock the white balance on the phone.  You calibrate the phone by putting the grey card where the coin would go, pointing the phone at the card and then setting the white balance lock.  This will be more significant when photographing gold, as gold tends to confuse the software that auto-calibrates the colour balance on the camera. Learn how to use raw image files rather than taking pics directly to JPEG.  You can do this with free software, either on the phone or on a PC. Take a look at the 'open camera' app (free through the app store). Consider getting one of the little bluetooth dohickeys that let you trigger the shutter without physically touching the camera (a few quid off Amazon). Take a look at some of the missives in the photography section.

See my PM.  I've got a few more halves.

Half a dozen half sovs, half under spot
Eds, Georges and a Machin.  Click on photos to zoom in - what you see is what you get. 
UK buyers only, payment by bank transfer.  Add £7 for RMSD.
1910 Edward VII half sovereign (A) £220
1910 Edward VII half sovereign (B) £215




1914 George V half sovereign (A) £215
1914 George V half sovereign (B) £220
Most of the original mint finish is still visible




1915 George V half sovereign £220
Nice finish on this one.  Sydney mint.
1982 Machin half sovereign £210
 

Half a dozen half sovs, half under spot
Eds, Georges and a Machin.  Click on photos to zoom in - what you see is what you get. 
UK buyers only, payment by bank transfer.  Add £7 for RMSD.
1910 Edward VII half sovereign (A) £220
1910 Edward VII half sovereign (B) £215




1914 George V half sovereign (A) £215
1914 George V half sovereign (B) £220
Most of the original mint finish is still visible




1915 George V half sovereign £220
Nice finish on this one.  Sydney mint.
1982 Machin half sovereign £210
 

Half a dozen half sovs, half under spot
Eds, Georges and a Machin.  Click on photos to zoom in - what you see is what you get. 
UK buyers only, payment by bank transfer.  Add £7 for RMSD.
1910 Edward VII half sovereign (A) £220
1910 Edward VII half sovereign (B) £215




1914 George V half sovereign (A) £215
1914 George V half sovereign (B) £220
Most of the original mint finish is still visible




1915 George V half sovereign £220
Nice finish on this one.  Sydney mint.
1982 Machin half sovereign £210
 

Half a dozen half sovs, half under spot
Eds, Georges and a Machin.  Click on photos to zoom in - what you see is what you get. 
UK buyers only, payment by bank transfer.  Add £7 for RMSD.
1910 Edward VII half sovereign (A) £220
1910 Edward VII half sovereign (B) £215




1914 George V half sovereign (A) £215
1914 George V half sovereign (B) £220
Most of the original mint finish is still visible




1915 George V half sovereign £220
Nice finish on this one.  Sydney mint.
1982 Machin half sovereign £210
 

Half a dozen half sovs, half under spot
Eds, Georges and a Machin.  Click on photos to zoom in - what you see is what you get. 
UK buyers only, payment by bank transfer.  Add £7 for RMSD.
1910 Edward VII half sovereign (A) £220
1910 Edward VII half sovereign (B) £215




1914 George V half sovereign (A) £215
1914 George V half sovereign (B) £220
Most of the original mint finish is still visible




1915 George V half sovereign £220
Nice finish on this one.  Sydney mint.
1982 Machin half sovereign £210
 

Half a dozen half sovs, half under spot
Eds, Georges and a Machin.  Click on photos to zoom in - what you see is what you get. 
UK buyers only, payment by bank transfer.  Add £7 for RMSD.
1910 Edward VII half sovereign (A) £220
1910 Edward VII half sovereign (B) £215




1914 George V half sovereign (A) £215
1914 George V half sovereign (B) £220
Most of the original mint finish is still visible




1915 George V half sovereign £220
Nice finish on this one.  Sydney mint.
1982 Machin half sovereign £210
 

I would like the 3 under spot please

Half a dozen half sovs, half under spot
Eds, Georges and a Machin.  Click on photos to zoom in - what you see is what you get. 
UK buyers only, payment by bank transfer.  Add £7 for RMSD.
1910 Edward VII half sovereign (A) £220
1910 Edward VII half sovereign (B) £215




1914 George V half sovereign (A) £215
1914 George V half sovereign (B) £220
Most of the original mint finish is still visible




1915 George V half sovereign £220
Nice finish on this one.  Sydney mint.
1982 Machin half sovereign £210
 

Half a dozen half sovs, half under spot
Eds, Georges and a Machin.  Click on photos to zoom in - what you see is what you get. 
UK buyers only, payment by bank transfer.  Add £7 for RMSD.
1910 Edward VII half sovereign (A) £220
1910 Edward VII half sovereign (B) £215




1914 George V half sovereign (A) £215
1914 George V half sovereign (B) £220
Most of the original mint finish is still visible




1915 George V half sovereign £220
Nice finish on this one.  Sydney mint.
1982 Machin half sovereign £210
 

Half a dozen half sovs, half under spot
Eds, Georges and a Machin.  Click on photos to zoom in - what you see is what you get. 
UK buyers only, payment by bank transfer.  Add £7 for RMSD.
1910 Edward VII half sovereign (A) £220
1910 Edward VII half sovereign (B) £215




1914 George V half sovereign (A) £215
1914 George V half sovereign (B) £220
Most of the original mint finish is still visible




1915 George V half sovereign £220
Nice finish on this one.  Sydney mint.
1982 Machin half sovereign £210
 

Half a dozen half sovs, half under spot
Eds, Georges and a Machin.  Click on photos to zoom in - what you see is what you get. 
UK buyers only, payment by bank transfer.  Add £7 for RMSD.
1910 Edward VII half sovereign (A) £220
1910 Edward VII half sovereign (B) £215




1914 George V half sovereign (A) £215
1914 George V half sovereign (B) £220
Most of the original mint finish is still visible




1915 George V half sovereign £220
Nice finish on this one.  Sydney mint.
1982 Machin half sovereign £210
 

Half a dozen half sovs, half under spot
Eds, Georges and a Machin.  Click on photos to zoom in - what you see is what you get. 
UK buyers only, payment by bank transfer.  Add £7 for RMSD.
1910 Edward VII half sovereign (A) £220
1910 Edward VII half sovereign (B) £215




1914 George V half sovereign (A) £215
1914 George V half sovereign (B) £220
Most of the original mint finish is still visible




1915 George V half sovereign £220
Nice finish on this one.  Sydney mint.
1982 Machin half sovereign £210
 

Half a dozen half sovs, half under spot
Eds, Georges and a Machin.  Click on photos to zoom in - what you see is what you get. 
UK buyers only, payment by bank transfer.  Add £7 for RMSD.
1910 Edward VII half sovereign (A) £220
1910 Edward VII half sovereign (B) £215




1914 George V half sovereign (A) £215
1914 George V half sovereign (B) £220
Most of the original mint finish is still visible




1915 George V half sovereign £220
Nice finish on this one.  Sydney mint.
1982 Machin half sovereign £210
 

Half a dozen half sovs, half under spot
Eds, Georges and a Machin.  Click on photos to zoom in - what you see is what you get. 
UK buyers only, payment by bank transfer.  Add £7 for RMSD.
1910 Edward VII half sovereign (A) £220
1910 Edward VII half sovereign (B) £215




1914 George V half sovereign (A) £215
1914 George V half sovereign (B) £220
Most of the original mint finish is still visible




1915 George V half sovereign £220
Nice finish on this one.  Sydney mint.
1982 Machin half sovereign £210
 

Half a dozen half sovs, half under spot
Eds, Georges and a Machin.  Click on photos to zoom in - what you see is what you get. 
UK buyers only, payment by bank transfer.  Add £7 for RMSD.
1910 Edward VII half sovereign (A) £220
1910 Edward VII half sovereign (B) £215




1914 George V half sovereign (A) £215
1914 George V half sovereign (B) £220
Most of the original mint finish is still visible




1915 George V half sovereign £220
Nice finish on this one.  Sydney mint.
1982 Machin half sovereign £210
 

@Shuaib121 purse out

Half a dozen half sovs, half under spot
Eds, Georges and a Machin.  Click on photos to zoom in - what you see is what you get. 
UK buyers only, payment by bank transfer.  Add £7 for RMSD.
1910 Edward VII half sovereign (A) £220
1910 Edward VII half sovereign (B) £215




1914 George V half sovereign (A) £215
1914 George V half sovereign (B) £220
Most of the original mint finish is still visible




1915 George V half sovereign £220
Nice finish on this one.  Sydney mint.
1982 Machin half sovereign £210
 

Variety of 1/10oz gold coins - AGE, 1999 & 2004 proof brits and a 35th anniversary nugget
Now it's time for somebody else to enjoy these coins.  What you see is what you get - click on the photos for a larger version.  UK Buyers only, payment by bank transfer.  Price: £195 each plus £7 for RMSD; buy all 4 and get free shipping.
2022 1/10oz AGE
2021 1/10oz 35th anniversary nugget




1999 1/10oz proof Brittania
(incl. capsule but no COA or box). Minor fogging on reverse.
2004 1/10oz proof Britannia
(incl. capsule but no COA or box)

And the Perth Mint 125th proof version 
7,500 mintage
Roo,Kook and koala surrounded by golden wattle the national flower of Australia. 

Variety of 1/10oz gold coins - AGE, 1999 & 2004 proof brits and a 35th anniversary nugget
Now it's time for somebody else to enjoy these coins.  What you see is what you get - click on the photos for a larger version.  UK Buyers only, payment by bank transfer.  Price: £195 each plus £7 for RMSD; buy all 4 and get free shipping.
2022 1/10oz AGE
2021 1/10oz 35th anniversary nugget




1999 1/10oz proof Brittania
(incl. capsule but no COA or box). Minor fogging on reverse.
2004 1/10oz proof Britannia
(incl. capsule but no COA or box)

Variety of 1/10oz gold coins - AGE, 1999 & 2004 proof brits and a 35th anniversary nugget
Now it's time for somebody else to enjoy these coins.  What you see is what you get - click on the photos for a larger version.  UK Buyers only, payment by bank transfer.  Price: £195 each plus £7 for RMSD; buy all 4 and get free shipping.
2022 1/10oz AGE
2021 1/10oz 35th anniversary nugget




1999 1/10oz proof Brittania
(incl. capsule but no COA or box). Minor fogging on reverse.
2004 1/10oz proof Britannia
(incl. capsule but no COA or box)

Variety of 1/10oz gold coins - AGE, 1999 & 2004 proof brits and a 35th anniversary nugget
Now it's time for somebody else to enjoy these coins.  What you see is what you get - click on the photos for a larger version.  UK Buyers only, payment by bank transfer.  Price: £195 each plus £7 for RMSD; buy all 4 and get free shipping.
2022 1/10oz AGE
2021 1/10oz 35th anniversary nugget




1999 1/10oz proof Brittania
(incl. capsule but no COA or box). Minor fogging on reverse.
2004 1/10oz proof Britannia
(incl. capsule but no COA or box)

I will say the definition on the 1999 brit is superb.  These are some pics taken with different lighting.  You can see minor fogging on the reverse next to Britannia's spear but otherwise the device is really crisp  Remarkable detail for a coin that's 16mm wide.