This should answer some questions and assumptions. Taken from the Texas Register.
To read the entire explanation and the actual rule instead of just the summary from the outdoor annual see page 12 starting with SUBCHAPTER A. STATEWIDE HUNTING
PROCLAMATION.
https://www.sos.texas.gov/texreg/pdf/backview/0114/0114adop.pdfBy requiring the confirmation number of the
harvest report to be attached to a carcass, the rule allows game
wardens to efficiently check harvested deer or turkey for tags.
In instances in which a game warden encounters deer or turkey
harvested under a digital license or tag, the warden will either
check the hunter's smartphone, computer, tablet, or other device
to verify that the required harvest report has been submitted,
or query the license system to verify that the hunter, the deer or
turkey, and the location of harvest have been reported. Additionally,
the rule prescribes the requirements for situations in which
data connectivity prevents the required harvest report from being
uploaded (i.e., preventing a confirmation number from being
obtained). Specifically, a person who harvests a deer or turkey
and reports via the electronic application as required but cannot
receive a confirmation number because of data connectivity issue
is required to complete a hunter's document and attach it to
the carcass of the deer or turkey until reaching data connectivity
and obtaining a confirmation number. The hunter's document
contains the same information required to be reported via the
electronic application, and is replaced with documentation of the
confirmation number once the confirmation number is received.
Finally, the amendment requires persons hunting deer or turkey
under a digital license or tag to be in possession of an appropriate
electronic device while hunting. It is or should be intuitively
obvious that compliance with the requirement for digital tagging
immediately upon harvest cannot take place in the absence of
a functioning smartphone, computer, or other device capable of
being used to satisfy reporting requirements; thus, the rule requires
that the capability for compliance be present. The department
acknowledges that situations may arise in which electronic devices
are damaged, lost, or lose power and notes that
Parks and Wildlife Code, §42.004, provides for the dismissal of
charges for persons charged with hunting license violations if the
person is able to produce for the court or the prosecuting attorney
the proper hunting license issued to the person and valid
at the time of the offense.