Mobile VPN, phone android as exit node -- 2

Job ID: 36607749

Budget: €250 – €750 EUR

1st case

I have phone A with 4G/5G, with a mobile IP
I have server in cloud with a decicated adress datacenter IP
I want to build VPN, that shows my phone A IP.
I want to use OpenVPN for this.
So everyone using the config, with OpenVPN will have their public IP shown as phone A IP


2nd case
I can buy open vpn config from a third party, these config are mobile IP vpn
let's called this config A
I resell this A must not be shown to my customers
do you have a lotuion for that?
building another vpn (config B that route traffic to VPN of config A?