You probably need to contact the DPO of each company starting with Samsung and/or consult their dedicated GDPR resources. Unfortunately GDPR is not really enfor

You probably need to contact the DPO of each company starting with Samsung and/or consult their dedicated GDPR resources. Unfortunately GDPR is not really enforced thus fails to live up to its promise. In theory you should have nothing to worry about unless you opted in to their data collecting shenanigans. Even if you are prepared to exercise your rights under GDPR in my experience the usual modus operandi is asking for more data via various registration forms and accounts or sending copies of personal IDs. Then if you manage to hand in a Data Request or Deletion Request there is no way to find out whether they really complied or not, making it pointless.