The curiosity or jealousy, innocent prank or concrete shadowing – whatever reasons pushed you to read the husband's sms, you thereby roughly break his borders of personal space, so, do not respect him. Think whether 5 minutes of the satisfied curiosity are worth it that, perhaps, forever to lose trust of the spouse.
To read letters in the husband's phone, without risking to lose trust
It is possible to read SMS in the husband's phone only if you let him know, and it gave you the consent. It is better that this action took place in its presence, and he precisely knew with what motives you do it. If your motives are so innocent that you can quietly tell about them to the spouse, then – of course why you and are not present. You can even send from its number messages it to friends, girlfriends or colleagues if only he unambiguously allowed it to do to you.
If moves you only jealousy and desire to secretly find out details of alleged private life of the spouse with other women, it is already very bad signal. Your beloved – not your property. To operate him as if the trained doggie, you will not be able. And if you are able, then nothing good from this will definitely leave, and still it is known to whom from it it will be worse – to him or you. Keep in mind that similar invasion on others "territory" – sign of obvious psychological insolvency. By the way, if you treat also your children, especially teenagers, they, perhaps, it will not forgive you. The personal psychological space is necessary for each person.
What to do if you suspect the husband of treason and therefore you want to read his history SMS
The most certain way is to tell directly the spouse about the suspicions and "to call" it to account. If on the party it has no intrigues, for certain he will tell you about it. Of course, he can play a cunning trick, but here only your experience in communication with your husband will be able to prompt to you, he deceives you or not. And here if he begins to get out of replying, will show nervousness and uncertainty and will begin to hide phone, it can serve as a signal that to it really is that from you to hide. If you, for example, noticed that at night to it some letters systematically come, and are precisely sure that it is not advertizing …
What else situations allow to read SMS in someone else's phone
There are no rules without any exception. And here. In extreme situations, for example, when your husband suddenly and unjustly somewhere was gone, and his phone at the same time remained with you, borders of personal space concede in relevance to other, more significant things a little. The last messages, perhaps, will help with phone also to you, and to search services to trace the gone person.