When a guy texts you more than he calls your or barely calls at all, is he showing lack of interest?

If I have to be the one to call a guy and he pefers to text me, isn't that a little suspicious? I mean, why can't he just pick up the phone? Its weird because I never had a guy do this before.
When a guy texts you more than he calls your or barely calls at all, is he showing lack of interest?
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