I think it would have, because the primary attack vector is your messaging app. Some Android phones, such as mine, are locked in such a way that this cannot be uninstalled. I can use another messaging app but this one will still run on my phone which means that it can still be exploited.
Unfortunately, the only way to secure my phone because it no longer receives updates is through rooting, but this phone is not a model that can be rooted so my plan is to buy a new phone and root that, and probably remove all text messaging apps or find a way to sandbox them in a secure environment.
Unfortunately, the only way to secure my phone because it no longer receives updates is through rooting, but this phone is not a model that can be rooted so my plan is to buy a new phone and root that, and probably remove all text messaging apps or find a way to sandbox them in a secure environment.