Edge, EVO and 3G modems - Some Mobile Carriers block PPTP on their devices or supply devices such as the Huawei e220 modem that doesn't support PPTP connections. You might want to contact your ISP and check to see if that's the case.
May 28, 2020 Vpn over 3G Solutions | Experts Exchange iPhone VPN should work over 3G. I have connections working over 3G with PPTP, IPSec and L2TP VPN. All work without (big) problems. The built in iOS VPN client should do the job. I never needed 'openvpn' or other client. Typically the other VPN-clients that you should need are for SSL-vpn. Raspberry Pi Vpn 3g - easygood.biz
5G and Security: How does 5G work and what are the risks?
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5G and Security: How does 5G work and what are the risks?
StrongVPN.com - Providing high speed, unlimited bandwidth StrongVPN.com - Providing high speed, unlimited bandwidth, multiple countries VPN accounts for over 100,000 users. Since 1995. STRONG VPN 3G, 4G, LTE sim is only supported by this application. Strong VPN supported all nerworks in the Philippines like: Smart, Talk N Text, ABS-CBN, SUN, Cherry sim, Globe and TM. DATABASE StrongVPN — The Strongest VPN on the App Store