gopdu

dec := SMS{}
dec.Decode(t01)
dec.Decode(t02)
dec.Decode(t03)
dec.Decode(t04)
dec.Decode(t05)
dec.Decode(t06)
dec.Decode(t07)
dec.Decode(t08)
dec.Decode(t09)
dec.Decode(t10)
dec.Decode(t11)
dec.MergeTextToFirst()
sort_ := []string{}
for k, v := range dec {
	if v.Part <= 1 {
		sort_ = append(sort_, k.(string))
	}
}
sort.Slice(sort_, func(i, j int) bool {
	return sort_[i] < sort_[j]
})
for _, v := range sort_ {
	fmt.Println(dec[v].Text)
}

Output:

Howdy y'all!
hellohello
hellohello
How are you?
It is easy to read text messages via AT commands.
This is an SMS PDU example from smspdu.com
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
This is an SMS PDU example from smspdu.com
A flash message!