Moving in together is a big step and can bring you closer, but it's totally normal to have some concerns, especially when it comes to managing temper and communication expectations. Here are some steps to help you navigate and improve these areas:

1. **Open Communication:**
- **Have an Honest Conversation:** Sit down and talk with your boyfriend about your concerns. Share your feelings honestly but calmly, emphasizing that it's about improving the relationship for both of you.
- **Discuss Communication Preferences:** Find out his communication style and preferences. Maybe he's not as glued to his phone or needs downtime after work. Understanding each other's habits can help set realistic expectations.

2. **Set Boundaries and Expectations:**
- **Set Response Times:** Agree on reasonable response times for texts and voice notes. Sometimes, even a brief message to say "I'll respond later" can help manage expectations.
- **Regular Check-ins:** Schedule regular couple check-ins where you can discuss what's working and what needs adjustment. This can prevent misunderstandings from boiling over.

3. **Work on Temper Management:**
- **Identify Triggers:** Keep a journal to note what specifically triggers your anger. This can help you understand the underlying causes and work on them.
- **Practice Calm Communication:** Before reacting, take a deep breath or count to ten. Choose to express your feelings calmly instead of letting anger take over.
- **Develop Coping Strategies:** Find techniques that help you calm down, such as walking, listening to music, or practicing mindfulness exercises.

4. **Understand and Respect Each Other's Needs:**
- **Empathy:** Try to put yourself in his shoes. Understanding his perspective can lower frustration and foster empathy.
- **Privacy and Space:** Ensure you both have personal space even when living together. It's important to maintain some independence within the relationship.

5. **Seek Professional Help if Needed:**
- **Counseling:** Sometimes, it can be helpful to talk to a therapist or counselor, either individually or as a couple, to work through anger issues and improve communication strategies.

6. **Positive Reinforcement:**
- **Acknowledge Efforts:** If you notice improvements in how you manage your temper or how he responds to you, acknowledge it and be appreciative. Positive reinforcement can go a long way.

Remember, every relationship has its challenges, and working through them together can strengthen your bond. It’s great that you’re aware of these issues and willing to work on them. Best of luck with your move and your journey together!