Apps like uMobility

Here are some great alternatives to uMobility by BizRTC LLC. :
SessionTalk Pro Softphone
SessionTalk Pro Softphone
★3.5
SessionTalk Softphone
SessionTalk Softphone
★3.6
HelloBD Calling Card
HelloBD Calling Card
★4.3
Zoiper IAX SIP VOIP Softphone
Zoiper IAX SIP VOIP Softphone
★4.4
Sipnetic
Sipnetic
★4.0
Connect.US
Connect.US
★4.2
Mabrook Plazma
Mabrook Plazma
★3.5
Anywhere Connect
Anywhere Connect
★3.4
Mobee Star
Mobee Star
★4.0
REDCOM Sigma Client
REDCOM Sigma Client
★4.4
Acrobits: VoIP SIP Softphone
Acrobits: VoIP SIP Softphone
★3.6
Groundwire: VoIP SIP Softphone
Groundwire: VoIP SIP Softphone
★3.5
Teo Softphone for Android
Teo Softphone for Android
★4.8
jiPBX - SIP VOIP Softphone
jiPBX - SIP VOIP Softphone
★4.3
SessionCloud SIP Softphone
SessionCloud SIP Softphone
★3.6
Zeo Dialer
Zeo Dialer
★3.9